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Leaves - simple; alternate; edge sharply and doubly toothed. Outline - oval or long egg-shape. Apex - taper-pointed. Base - slightly heart-shaped or rounded. Leaf/Stem - about one eighth inch long, stout and rough. Buds - hairy. Leaf - four to seven inches long, three to four inches wide. The upper surface is rough both ways, and very rough downwards, almost like a fine file. The under surface is slightly rough. Ribs - beneath are prominent and straight, and hairy in their angles. Bark - of the larger branches, brownish; branchlets, light-gray and very rough, becoming grayish-purple. The inner bark is very gummy and "slippery." Seeds - flat, round, winged, but not fringed. Last of May. Found - along the lower St. Lawrence to Ontario, and from Western New England westward and southward; in woods and along streams. General Information - A tree thirty to forty feet high. Its wood is hard and strong, but splits easily when dry. Though otherwise inferior, for posts it is superior to white elm. Its inner bark is sold by druggists as "slippery elm," and is nutritious and medicinal. Its name of red elm is due to the reddish-brown tinge of its large rounded and hairy buds in the spring.

Genus Ulmus, L. (Elm)

Leaves - simple; alternate; edge sharply and doubly toothed. Outline - oval or long egg-shape. Apex…

Leaves - simple; alternate (often alternate in pairs); edge unequally sharp-toothed, with the base entire. Outline - triangular. Apex - taper-pointed. Base - variable, more or less squared, sometimes slightly hollowed, rounded or pointed. Leaf/Stem - long and slender, about three quarters of an inch or more in length. Leaf - one and three quarters to three inches long. Smooth and shining on both sides. Bark - The outer bark of the mature trunk is chalky-white and thin, but not, like the bark of the Paper-birch, easily separable into layers. Usually it is marked with blackish dots and lines. Often the branchlets and twigs are blackish, and in very young trees the bark may be light reddish-brown, and marked with white dots. Found - on poor soil, from Delaware and Pennsylvania northward (mostly toward the coast), and in ornamental cultivation. It springs up abundantly over burned and abandoned lands. General Information - A slender, short-lived tree, twenty to thirty feet high, with white, soft wood, not durable; used largely in making spools, shoe pegs, etc., and for fuel. A still more graceful cultivated species is the European Weeping Birch (B. pendula). Its branches are very drooping, with more slender leaves, and a spray that is exceedingly light and delicate, especially in early spring.

Genus Betula, L. (Birch)

Leaves - simple; alternate (often alternate in pairs); edge unequally sharp-toothed, with the base entire.…

Leaves - simple; alternate; edge finely and rather sharply toothed. Outline - egg-shape. Apex - taper-pointed. Base - rounded. Leaf/Stem - nearly smooth, the lower half rounded, the upper part only slightly flattened. Leaf/Bud - in the spring is large and yellow, and covered with a fragrant gum (as, to some extent, are the buds of most of the poplars). Leaf - four to six inches long; when young, yellowish above, becoming bright green; whitish, and "net-veined" below; smooth. Found - in Northern New England, Central Michigan, and Minnesota, and far northward. General Information - A tree sixty to seventy feet high, with very light and soft wood.

Genus Populus, L. (Aspen, Poplar)

Leaves - simple; alternate; edge finely and rather sharply toothed. Outline - egg-shape. Apex - taper-pointed.…

Leaves - simple; alternate; edge toothed. Outline - egg-shape. Apex - taper-pointed. Base - heart-shape. Leaf/Stem - usually hairy, nearly round. Leaf/Bud - in the spring is large and varnished, and very fragrant. Leaf - four to six inches long, nearly as broad; yellowish when young, becoming dark green above, and whitish beneath; net-veined. Bark - smooth and greenish, and often dark-spotted. Found - seldom or never growing wild, but common in cultivation. General Information - a tree forth to fifty feet high, loosely and irregularly branches, and with abundant foliage.

Genus Populus, L. (Aspen, Poplar)

Leaves - simple; alternate; edge toothed. Outline - egg-shape. Apex - taper-pointed. Base - heart-shape.…

Leaves - simple; alternate; edge usually lobed (the lobes toothed). Outline - broad egg-shape. Apex - of the lobes, blunt-pointed. Base - usually slightly heart-shaped. Leaf/Stem - downy and nearly round. Leaf - usually about two and a half inches long; when mature, smooth and dark green above, below downy and almost snow-white. In the young leaves both surfaces and the leaf-stem are snowy-white and downy. General Information - A native of Europe; now widely introduced. A very ornamental tree, but troublesome in cultivation, and now out of favor because of the abundance of suckers that spring from its roots.

Genus Populus, L. (Aspen, Poplar)

Leaves - simple; alternate; edge usually lobed (the lobes toothed). Outline - broad egg-shape. Apex…

Leaves - simple; alternate; edge entire. Outline - long and narrow. Apex - pointed and bristle-tipped. Base - pointed. Leaf - three to six inches long; one to two inches wide; smooth and shining above; somewhat downy beneath; thick and stiff. Bark - smooth and unbroken. Acorns - small, nearly stemless. Cup - shallow. Nuts - rounded; about one half inch in diameter; bitter. October. Found - in Lehigh County, Pennsylvania (Porter), westward to Southeastern Iowa, and southward. Most common west of the Alleghany Mountains. General Information - A tree thirty to fifty feet high, with poor wood, that is used at the West for shingles and clapboards. Note: Of the nine hybrids that have been recognized, most are outside of our limits or entirely local. Mention need be made only of tow: Q. heterophylla, Michaux ("Bartram's Oak"). Staten Island and New Jersey to Delaware and North Carolina; Q. Rudkini, Britt., New Jersey. Quercus, possible from a Celtic word meaning to inquire, because it was among the oaks that the Druids oftenest practised their rites. The Oak "Live thy Life, Young and old, Like yon oak, Bright in spring, Living gold; Summer-rich, Then; and then Autumn-changed, Sober-hued Gold again. All his leaves fall'n at length, Look, he stands, Trunk and bough, Naked strength.: Alfred (Lord) Tennyson, 1889.

Genus Quercus, L. (Oak)

Leaves - simple; alternate; edge entire. Outline - long and narrow. Apex - pointed and bristle-tipped.…

Leaves - simple; opposite; edge entire. Outline - egg-shape, or often broad oval, or reverse egg-shape. Apex - pointed, often taper-pointed. Base - pointed and usually slightly unequal. Leaf/Stem - short (about one half inch). Leaf - three to five inches long; smooth above; pale and nearly smooth beneath; with the whitish ribs very distinct and curved. Bark - of trunk, blackish and rough, with short, broken ridges. The bark, especially of the roots, is very bitter and is used as a tonic. Flowers - The real flowers are greenish-yellow, in a small rounded bunch; but this bunch is surrounded by four large, petal-like leaves, white and often tinged with pink, more than an inch in length, reverse egg-shaped, and ending in a hard, abruptly turned point. The appearance is of a single large flower. The tree blossoms in May before the leaves are fully set. Fruit - The "Flower" is succeeded by a bunch of oval berries that turn bright red as they ripen, making the tree in the autumn, with its richly changing foliage, nearly as attractive as in the spring. Found - in rich woods, from New England to Minnesota, and southward to Florida and Texas. It is very common, especially at the South. General Information - A finely shaped, rather flat-branching tree, usually twelve to thirty feet high, but dwindling, northward, to the dimensions of a shrub; one of the most ornamental of all our native flowering trees. Its character throughout the extent of its range would seem to warrant the recognition of its blossom as the "national flower." Cornus, from a Greek word meaning horn, because of the hardness of the wood.

Flowering Dogwood

Leaves - simple; opposite; edge entire. Outline - egg-shape, or often broad oval, or reverse egg-shape.…

Leaves - simple; opposite; edge lobed, with the lobes irregularly sharp-toothed and notched. Outline - roundish, with three to five lobes (the lowest pair, if present, the smallest); and with the hollows between the lobes pointed and usually extending less than half-way to the base of the leaf. Apex - of the lobes, pointed. Base - heart-shaped (or sometimes rounded.) Leaf/Stem - long and round. Leaf - (very variable in size and in the toothing and shape of its lobes); whitish beneath. Bark - smoothish; gray, becoming dark and rough with age. Flowers - rich crimson, on short stems in drooping clusters. March, April. Fruit - bright red, smooth, with stems two to three inches long. The wings are about one inch long. At first they approach each other, but afterward are somewhat spreading. September. Found - widely distributed in swamps and along streams especially in all wet forests eastward from the Mississippi to the Atlantic, and from Southern Canada to Florida and Texas. General Information - A tree thirty to sixty feet high, with wood of considerable value, especially when it shows a "curly grain." It is one of the very earliest trees to blossom in the spring, and to show its autumn coloring in the fall.

Genus Acer, L. (Maple)

Leaves - simple; opposite; edge lobed, with the lobes irregularly sharp-toothed and notched. Outline…

Leaves - compound (odd-feathered; leaflets eleven to thirty-one); alternate; edge of leaflets evenly and sharply toothed. Outline - of leaflet, narrow egg-shape. Apex - long, taper-pointed. Base, rounded or slightly heart-shaped. Leaflet/Stem - lacking. Leaf/Stem - densely velvety-hairy. Leaflet - usually two to four inches long and about one fourth as wide; the under surface whitish and more or less downy. Leaf - one or two feet or more in length. Branchlets - and stalks, especially towards their ends, covered with a very dense velvet-like down, often crimson-tinged. The just is milky and acid. Flowers - greenish-yellow, in upright, pyramid-shaped bunches at the ends of the branches. June. Berries - rounded, somewhat flattened, bright crimson velvety, crowded. Stone - smooth. Juice, acid. September, October. Found - from New Brunswick and the valley of the St. Lawrence through the Northern States, and southward along the Alleghany Mountains to Central Alabama. General Information - A small tree, ten to thirty feet high (or often a shrub), with straggling and evenly spreading branches that are leaved mostly toward their ends, giving an umbrella-like look to the tree. The wood is very soft and brittle; yellow within; the sap-wood white. The young shoots with the pith removed, are used in the spring as "sap quills" in drawing the sap from the sugar maples. The downy and irregular branchlets are suggestive of the horns of a stag, whence the name. An infusion of the berries is sometimes used as a gargle for sore-throat. This species is not poisonous. A variety with deeply gashed leaves (var. laciniata) is reported from Hanover, N. H.

Genus Rhus, L. (Sumach)

Leaves - compound (odd-feathered; leaflets eleven to thirty-one); alternate; edge of leaflets evenly…

Three types of governors: a, Watt's; b, Pröll's; c, Spring. A governor is a device that maintains "a uniform velocity with a varying resistance." -Foster, 1921

Governors

Three types of governors: a, Watt's; b, Pröll's; c, Spring. A governor is a device that maintains…

Mother Nature walking through the woods, smiling at some birds. It is spring.

Mother Nature, Spring

Mother Nature walking through the woods, smiling at some birds. It is spring.

Two cases of springs: "In one, the water descends through the porous bed e to the layer d, which is relatively impervious. The water flows along this layer until it comes to the surface, and there the water flows out as a spring, s'. In the other, the water moves underground through the porous layer b, under pressure, until it reaches a crack which leads up to the surface...s." -Salisbury, 1919

Springs

Two cases of springs: "In one, the water descends through the porous bed e to the layer d, which is…

"Diagram showing possible conditions of contamination of wells by sea water." -Gunter, 1933

Contamination

"Diagram showing possible conditions of contamination of wells by sea water." -Gunter, 1933

"The digestion of the stored food and its ascent through the tracheal tubes when growth is resumed in the spring." -Stevens, 1916

Plant Food Digestion

"The digestion of the stored food and its ascent through the tracheal tubes when growth is resumed in…

Simple or surface springs: (d) stratum, (e) clay, (c) pervious bed, (a) strata, (b) valley.

Simple Springs

Simple or surface springs: (d) stratum, (e) clay, (c) pervious bed, (a) strata, (b) valley.

"Deep-seated Springs (s, s') rising through joints at a fault (f)." -Geikie, 1893

Deep-Seated Springs

"Deep-seated Springs (s, s') rising through joints at a fault (f)." -Geikie, 1893

Of the purslane family (Portulacaceae): left, the Purslane (Portulaca oleracea); right, spring beauty (Claytonia Virginica).

Purslane and Spring Beauty

Of the purslane family (Portulacaceae): left, the Purslane (Portulaca oleracea); right, spring beauty…

Of the mustard family (Cruciferae), the spring cress or Cardamine bulbosa.

Spring Cress

Of the mustard family (Cruciferae), the spring cress or Cardamine bulbosa.

This image "represents a cross section through the ejector with the magazine loaded. The parts shown are receiver, A; bolt, B; firing pin, C; ejector, D; clip slots, E; bolt locking lug channels, F; magazine, G; follower, H; magazine spring, I; and floor plate, J." -Moss, 1914

Loaded Magazine

This image "represents a cross section through the ejector with the magazine loaded. The parts shown…

This image "shows a cross section through the magazine empty, and with cut-off "on," shown in projection. The parts are receiver, A; bolt, B; firing pin, C; cut-off, D; rear lug slot, E; bolt locking lug channels, F; magazine, G; follower, H; magazine spring, I; and floor plate, J." -Moss, 1914

Empty Magazine

This image "shows a cross section through the magazine empty, and with cut-off "on," shown in projection.…

A decorative frame with a creek, trees, and lily pads.

Spring Frame

A decorative frame with a creek, trees, and lily pads.

A decorative border for spring with vines, a nest, and dragonflies.

Spring Border

A decorative border for spring with vines, a nest, and dragonflies.

"Three stages in the development of Apus. fs, frontal sensory organ; L, digestive gland; s, carapace; 1-4, cephalic appendages; I-XIII, body segments and appendages." -Parker, 1900

Apus Stages

"Three stages in the development of Apus. fs, frontal sensory organ; L, digestive gland; s, carapace;…

Of the Borage family (Boraginaceae), the forget-me-not (Myosotis scorpioides). Small images: top, spring forget-me-not; bottom, smaller forget-me-not.

Forget-Me-Not

Of the Borage family (Boraginaceae), the forget-me-not (Myosotis scorpioides). Small images: top, spring…

"Fruit-bud of pear, showing its development. A, opening in spring; B, later, developing flowers and leaves; C, later still; only one flower has produced a fruit, the rest having fallen off. Below it is a lateral bud which will continue the spur next year." -Bergen, 1896

Pear Fruit-Bud

"Fruit-bud of pear, showing its development. A, opening in spring; B, later, developing flowers and…

Conflict with a rattlesnake. Caption below illustration: "The snake when about a yard distant, made a violent spring. Jervas caught it in his right hand, directly under his head. He squeezed it with all his power. Its eyes almost started out of its head. It lashed its body on the ground, at the same time rattling loudly."

Conflict with a Rattlesnake

Conflict with a rattlesnake. Caption below illustration: "The snake when about a yard distant, made…

Silver Springs is a clear basin within the St. Johns River in Florida. It is famed for its depth and clarity of the water. This spring is seventy feet deep, as clear as crystal, and remarkably fresh and cool.

Silver Springs, Florida

Silver Springs is a clear basin within the St. Johns River in Florida. It is famed for its depth and…

A form of spring safety-valve, in which a series of bent springs h h h are placed alternately in opposite directions, their extremities sliding upon the rod i, and the springs being kept down by the crossbar k; a being the valve, c the valve-seat, and b b part of the boiler.

Lever Spring Safety-valve

A form of spring safety-valve, in which a series of bent springs h h h are placed alternately in opposite…

An illustration of an electric bell. "The magnetizing coils are a a, and they are connected with their terminals at binding posts b1, b2. When these binding posts are connected with the electric current and the circuit is closed, the armature, at d, will be attracted, and will push the hammer e upon the bell. When the armature is attracted, the spring f leaves the screw contact g, against which it rests." -Foster, 1921

Electric Bell

An illustration of an electric bell. "The magnetizing coils are a a, and they are connected with their…

"The family of Pavonidae comprehends the Peacock." The male bird forms the beautiful array of tail feathers each Spring.

Peacock

"The family of Pavonidae comprehends the Peacock." The male bird forms the beautiful array of tail feathers…

"At the end of spring they have developed into pupae. The come out of the earth, and hook themselves n the trunks of trees, and strip themselves of their skin, which remains whole and dry."

Pupa of the Cicada

"At the end of spring they have developed into pupae. The come out of the earth, and hook themselves…

"They fly in the spring and summer, in gardens and meadows. They live in companies, under a silky web, in which they pass the winter."

Pieris Brassicae

"They fly in the spring and summer, in gardens and meadows. They live in companies, under a silky web,…

"Nature, pervades the air, where grow the modest blue-eyed violets, the fragrant trailing arbutus, spicy and sweet, the funny Jack-in-the-pulpit, without which no collection of wild flowers would be complete, and there also maybe found the rare and beautiful bloodroot, whose stay is so short one can scarce catch a glimpse of its pure, white blossoms ere they vanish." -Beard, 1906

Bloodroot flower

"Nature, pervades the air, where grow the modest blue-eyed violets, the fragrant trailing arbutus, spicy…

A man using a well to draw water from the ground.

Well

A man using a well to draw water from the ground.

A natural fountain of water springing out of a body of water.

Fountain

A natural fountain of water springing out of a body of water.

The second larva stage lasts for 6 weeks. It contracts and passes through the winter. "In the spring it comes forth as the third larva. This one does not eat, and soon changes into the ordinary pupa."

Third Larva of Sitaris Humeralis

The second larva stage lasts for 6 weeks. It contracts and passes through the winter. "In the spring…

The second larva stage lasts for 6 weeks. It contracts and passes through the winter. "In the spring it comes forth as the third larva. This one does not eat, and soon changes into the ordinary pupa."

Pupa of Sitaris Humeralis

The second larva stage lasts for 6 weeks. It contracts and passes through the winter. "In the spring…

A geyser is a hot spring characterized by intermittent discharge of water ejected turbulently and accomplished by a vapour phase.

Giantess Geyser, Yellowstone Park

A geyser is a hot spring characterized by intermittent discharge of water ejected turbulently and accomplished…

An view of Hot Springs, Arkansas which is nestled in a valley between two mountains. Hot Springs is traditionally known for the natural spring water that gives it its name, flowing out of the ground at a temperature of 147 degrees Fahrenheit. Also is the home town of former President Bill Clinton.

Hot Springs, Arkanasas

An view of Hot Springs, Arkansas which is nestled in a valley between two mountains. Hot Springs is…

May Day marks the end of the winter half of the year in the Northern hemisphere, and it has traditionally been an occasion for popular and often raucous celebrations, regardless of the locally prevalent political or religious establishment. Traditional English May Day rites and celebrations include Morris dancing, crowning a May Queen and celebrations involving a Maypole.

May Day Celebration

May Day marks the end of the winter half of the year in the Northern hemisphere, and it has traditionally…

An illustration of a large oak tree. Oaks have spirally arranged leaves, with a lobed margin in many species; some have serrated leaves or entire leaves with a smooth margin. The flowers are catkins, produced in spring. The fruit is a nut called an acorn, borne in a cup-like structure known as a cupule; each acorn contains one seed (rarely two or three) and takes 6–18 months to mature, depending on species.

Oak

An illustration of a large oak tree. Oaks have spirally arranged leaves, with a lobed margin in many…

An illustration of a Judas tree wrapped around a palm tree. Cercis siliquastrum, commonly known as Judas Tree, is a small deciduous tree from Southern Europe and Western Asia which is noted for its prolific display of deep-pink flowers in spring.

Judas Tree

An illustration of a Judas tree wrapped around a palm tree. Cercis siliquastrum, commonly known as Judas…

<p>A: Bouchon <br>B: Lever <br>C: Bouchon Seal <br>D: Striker <br>E: Spring <br>F: Hinge Pin <br>G: Split Pin <br>H: Split Pin Ring <br>I: Moisture Cap <br>K: Primer <br>L: Priming Powder <br>M: Fuse <br>N: Detonator </p>

Grenade Parts

A: Bouchon B: Lever C: Bouchon Seal D: Striker E: Spring F: Hinge Pin G: Split Pin H: Split Pin Ring…

The buffer consists of a tube in which are placed successively from front to rear, the buffer head, a brass friction cup with concave interior and split to allow it to spring; a steel cone to fit into the cup. For of these ups and cones are placed one after the other. Next is the buffer spring and finally the buffer nut which is screwed into the end of the tube and forms a seat for the spring.

Buffer Mechanism

The buffer consists of a tube in which are placed successively from front to rear, the buffer head,…

The hessian fly or barley midge, Mayetiola destructor, is a species of fly that is a significant pest of cereal crops including wheat, barley and rye. Though a native of Asia it was transported into Europe and later into North America, supposedly in the straw bedding of Hessian troops during the American Revolution (1775&ndash;83). There are usually two generations a year but may be up to five. In the spring the dark-coloured female lays about 250 to 300 reddish eggs on plants, usually where the stems are covered by leaves; the larvae feed on the sap and weaken the plants so that they cannot bear grain.

Hessian Fly

The hessian fly or barley midge, Mayetiola destructor, is a species of fly that is a significant pest…

The family Elateridae is commony called click beetles (or "typical click beetles" to distinguish them form the related Cerophytidae and Eucnemidae), elaters, snapping beetles, spring beetles or "skipjacks". They are a cosmopolitan beetle family characterized by the unusual click mechanism they possess. There are a few closely-related families in which a few members have the same mechanism, but all elaterids can click. A spine on the prosternum can be snapped into a corresponding notch on the mesosternum, producing a violent "click" which can bounce the beetle into the air. Clicking is mainly used to avoid predation, although it is also useful when the beetle is on its back and needs to right itself. There are about 7000 known species.

Click Beetle

The family Elateridae is commony called click beetles (or "typical click beetles" to distinguish them…

An illustration of a male spring cankerworm moth.

Spring Cankerworm Moth (Male)

An illustration of a male spring cankerworm moth.

An illustration of a female spring cankerworm moth.

Spring Cankerworm Moth (Female)

An illustration of a female spring cankerworm moth.

Anthony Wayne (January 1, 1745&ndash;December 15, 1796) was a United States Army general and statesman. Wayne adopted a military career at the outset of the American Revolutionary War, where his military exploits and fiery personality quickly earned him a promotion to the rank of brigadier general and the sobriquet of "Mad Anthony".

General Anthony Wayne's Gold Medal (Front)

Anthony Wayne (January 1, 1745–December 15, 1796) was a United States Army general and statesman.…

Anthony Wayne (January 1, 1745&ndash;December 15, 1796) was a United States Army general and statesman. Wayne adopted a military career at the outset of the American Revolutionary War, where his military exploits and fiery personality quickly earned him a promotion to the rank of brigadier general and the sobriquet of "Mad Anthony".

General Anthony Wayne's Gold Medal (Back)

Anthony Wayne (January 1, 1745–December 15, 1796) was a United States Army general and statesman.…

The almond is native to Iran, from northwestern Saudi Arabia, north through western Jordan, Israel, Lebanon, western Syria, to southern Turkey. It is a small deciduous tree, growing to between 4 and 10 meters in height, with a trunk of up to 30 centimeters in diameter. The young shoots are green at first, becoming purplish where exposed to sunlight, then grey in their second year. The leaves are 1 cm long and 1.2&ndash;4 cm broad, with a serrated margin and a 2.5 cm petiole. The flowers are white or pale pink, 3&ndash;5 cm diameter with five petals, produced singly or in pairs before the leaves in early spring. The fruit is a drupe 3.5&ndash;6 cm long, with a downy outer coat. The outer covering or exocarp, (fleshy in other members of Prunus such as the plum and cherry), is instead a leathery grey-green coating called the hull, which contains inside a hard shell, and the edible seed, commonly called a nut in culinary terms. Generally, one seed is present, but occasionally there are two. In botanical terms, an almond is not a true nut. The reticulated hard woody shell (like the outside of a peach pit) surrounding the edible seed is called the endocarp. The fruit is mature in the autumn, 7&ndash;8 months after flowering.

Almond Tree and Fruit

The almond is native to Iran, from northwestern Saudi Arabia, north through western Jordan, Israel,…

Cirsium arvense is a species of Cirsium, native throughout Europe and northern Asia, and widely introduced elsewhere. The standard English name in its native area is Creeping Thistle. It is a tall herbaceous perennial plant, forming extensive clonal colonies from an underground root system that sends up numerous erect stems each spring, reaching 1&ndash;1.2 m tall (occasionally more); the stems often lie partly flat by summer but can stay erect if supported by other vegetation. The leaves are very spiny, lobed, up to 15&ndash;20 cm long and 2&ndash;3 cm broad (smaller on the upper part of the flower stem). The inflorescence is 10&ndash;22 mm diameter, pink-purple, with all the florets of similar form (no division into disc and ray florets). The flowers are usually dioecious, but not invariably so, with some plants bearing hermaphrodite flowers. The seeds are 4&ndash;5 mm long, with a feathery pappus which assists in wind dispersal.

Canada Thistle

Cirsium arvense is a species of Cirsium, native throughout Europe and northern Asia, and widely introduced…

The brook trout, Salvelinus fontinalis, (sometimes called the eastern brook trout, Adirondack coaster lake trout) is a species of fish in the salmon family of order Salmoniformes. The brook trout is native to small streams, creeks, lakes, and spring ponds. Some brook trout are anadromous. It is native to a wide area of eastern North America but increasingly confined to higher elevations southward in the Appalachian Mountains to northern Georgia, Canada from the Hudson Bay basin east, the Great Lakes&ndash;Saint Lawrence system, and the upper Mississippi River drainage as far west as eastern Iowa.

Brook Trout

The brook trout, Salvelinus fontinalis, (sometimes called the eastern brook trout, Adirondack coaster…

"Sea-walls. A. Plymouth (England) breakwater; a, a, level of the top; b, b, low water at spring tide; c, bottom; d, foreshore; e, sea-slope; f, top." -Whitney, 1911

Plymouth Breakwater

"Sea-walls. A. Plymouth (England) breakwater; a, a, level of the top; b, b, low water at spring tide;…

An illustration of a price computing spring weighing machine.

Spring Weighing Machine

An illustration of a price computing spring weighing machine.

"Lord Kelvin patented a brake in 1858 consisting of a rope or cord wrapped round the circumference of a rotating wheel, to one end of which is applied a regulated force, the other end being fixed to a spring balance." -Britannica, 1910

Brake

"Lord Kelvin patented a brake in 1858 consisting of a rope or cord wrapped round the circumference of…

The Toadshade (Trillium sessile) is a spring wildflower in the Melanthiaceae family of herbs and trilliums.

Toadshade

The Toadshade (Trillium sessile) is a spring wildflower in the Melanthiaceae family of herbs and trilliums.

"Sewing-horse. In saddlery, a sewing-clamp with its supports. a, seat; b, legs; c, c', clamping-jaws, c' hinged to c at d; e, strap fastened to c' passing through c, and attached by chain f to the foot-lever g, the latter pivoted at h; i, spring which opens the jaws when not pulled together by e; k, ratch which g engages to hold he jaws together." -Whitney, 1911

Sewing Horse

"Sewing-horse. In saddlery, a sewing-clamp with its supports. a, seat; b, legs; c, c', clamping-jaws,…

"Multiple-bladed Sheep-shears. a, a, handles joined by coiled spring c; b, b', plates joined to the handles and sliding upon each other, the motion being limited by the screw f working in slot g d, d, blades." -Whitney, 1911

Multiple-Bladed Sheep Shears

"Multiple-bladed Sheep-shears. a, a, handles joined by coiled spring c; b, b', plates joined to the…

"Shot-pouches. A, pouch for one size of shot: a, pouch; b, charger with gates c, c'; d, spring which holds the gate c closed until the lever e, which shuts the gate c' and opens c, is depressed, when the charge filling the nozzle between the two gates is released. The charge can be lessened by placing the gate c in the slot f." -Whitney, 1911

Hunting Shot Pouch

"Shot-pouches. A, pouch for one size of shot: a, pouch; b, charger with gates c, c'; d, spring which…