ClipArt ETC
Cross section of the ovary of Frost-Weed (Helianthemum), with three parietal placenta, bearing ovules.

Ovary of Frost Weed

Cross section of the ovary of Frost-Weed (Helianthemum), with three parietal placenta, bearing ovules.

Cross-section of an ovary of Hypericum graveolens, the three large placenta meeting in the centre, so as to form a three-celled ovary.

Hypericum graveolens

Cross-section of an ovary of Hypericum graveolens, the three large placenta meeting in the centre, so…

Section of the ovary of a Buttercup, lengthwise, showing its ascending ovule.

Ovary of a Buttercup

Section of the ovary of a Buttercup, lengthwise, showing its ascending ovule.

Section of the ovary of Buckwheat, showing the erect ovule.

Ovary of Buckwheat

Section of the ovary of Buckwheat, showing the erect ovule.

Section of the ovary of Anemone, showing its suspended ovule.

Ovary of Anemone

Section of the ovary of Anemone, showing its suspended ovule.

Three early stages in the growth of ovule of a Magnolia, showing the forming outer and inner coats, which, even in the later figure have not yet completely enclosed the nucleus.

Ovule of a Magnolia

Three early stages in the growth of ovule of a Magnolia, showing the forming outer and inner coats,…

Longitudinal section of flower of Silene Pennsylvanica, showing stipe between calyx and corolla.

Silene Pennsylvanica

Longitudinal section of flower of Silene Pennsylvanica, showing stipe between calyx and corolla.

Flower of a Cleome of the section Gynandropsis, showing broadened receptacles to bear petals, lengthened stripe below stamens, and another between these and pistil.

Flower of a Cleome

Flower of a Cleome of the section Gynandropsis, showing broadened receptacles to bear petals, lengthened…

Longitudinal section of a young rose-hip.

Rose-hip

Longitudinal section of a young rose-hip.

Enlarged and top-shaped receptacle of Nelumbium, at maturity.

Nelumbium

Enlarged and top-shaped receptacle of Nelumbium, at maturity.

Hypogenous disk in Orange.

Orange

Hypogenous disk in Orange.

Seed of Ricinus or Castor-oil plant, with caruncle.

Ricinus

Seed of Ricinus or Castor-oil plant, with caruncle.

Magnified view of some of a simple fresh water Alga, the Tetraspora lubrica, each sphere of which may answer to an individual plant.

Alga

Magnified view of some of a simple fresh water Alga, the Tetraspora lubrica, each sphere of which may…

Some cells from stalk of Rhubarb-plant, three containing chlorophyll; two (one torn across) with rhaphides.

Rhubarb-plant

Some cells from stalk of Rhubarb-plant, three containing chlorophyll; two (one torn across) with rhaphides.

Piece of stem of Sensitive Plant (Mimosa pudica), with two leaves. the lower open, the upper in the closed state.

Sensitive Plant

Piece of stem of Sensitive Plant (Mimosa pudica), with two leaves. the lower open, the upper in the…

Portion of stem and leaves of Telegraph-plant (Desmodium gyrans), almost of natural size.

Telegraph-plant

Portion of stem and leaves of Telegraph-plant (Desmodium gyrans), almost of natural size.

Plant of Dionaea muscipula, or Venus's Fly-trap.

Venus' Fly-trap

Plant of Dionaea muscipula, or Venus's Fly-trap.

Plant with large root system. Bracts at the top with spore cases.

Lycopodium Carolinianum

Plant with large root system. Bracts at the top with spore cases.

Plant of Marsilia quadrifoliata, at the right a pair of sporo-carps.

Marsilia quadrifoliata

Plant of Marsilia quadrifoliata, at the right a pair of sporo-carps.

Small plant of Chondrus crispus, Carrageen Moss; the spots represent the fructification, consisting of numerous tetraspores in bunches in the substance of the plant.

Chondrus Crispus

Small plant of Chondrus crispus, Carrageen Moss; the spots represent the fructification, consisting…

Grain or oat-plant louse, does much injury to grain, and especially to oats, but is also found on wheat, rye, and other cereals.

Aphis Avence

Grain or oat-plant louse, does much injury to grain, and especially to oats, but is also found on wheat,…

Also known as the Cotton-plant louse, is a great nuisance to the planters, especially when the plants are very small, as then they are more liable to succumb to the attacks of these insects, as by sucking out the sap they distort the stems, and in fact frequently kill the plants before they have attained sufficient maturity and strength to withstand their repeated attacks.

Aphis Gossypii

Also known as the Cotton-plant louse, is a great nuisance to the planters, especially when the plants…

Eriosoma Imbricata. Found very abundantly on birch in Maryland in October. These insects cluster together on the twigs, and have the appearance of many small spots of snow-like wool or down moving up and down by jerks, the hinder parts of the insect being covered with this downy secretion.

Wooly Aphid

Eriosoma Imbricata. Found very abundantly on birch in Maryland in October. These insects cluster together…

From the well known nocturnal habits of moths, and the certainty of their being destroyed by a light, a cheap and effective mode of destroying them, shown in the annexed figure. It consists of a pan of viscid matter placed upon a stake, which is set in the field of cotton at suitable distances. A block of wood is placed in the center of the pan, upon which is placed a lighted glass lantern. The moths, being attracted by the light, dash against it and fall into the pan, and are thus destroyed before depositing their eggs upon the tender leaves of the growing plant.

Moth Lantern

From the well known nocturnal habits of moths, and the certainty of their being destroyed by a light,…

If the earth were flat, as soon as an object appeared on the horizon we would see the upper and lower parts at the same time; but if it were curved, the top parts would first be seen.

Curvature of the Earth's Surface

If the earth were flat, as soon as an object appeared on the horizon we would see the upper and lower…

A Great Circle is one which would be formed on the earth's surface by a plane passing through the earth's centre, hence dividing it into two equal parts. All great circles, therefore, divide the earth into two hemispheres.

Great Circle

A Great Circle is one which would be formed on the earth's surface by a plane passing through the earth's…

A small circle is one formed by a plane which does not cut the earth into two equal parts. The small circles are the <em>parallels</em>.

Small Circle

A small circle is one formed by a plane which does not cut the earth into two equal parts. The small…

When the remains of an animal or plant are exposed to the air or buried in dry earth, they generally decompose and pass off almost entirely as gasses; but when buried under water or in damp earth, their preservation is probable. Therefore, the species most likely to become fossilized are those living in water or marshes, or in the neighborhood of water or marshes.

Fossil Encrinite

When the remains of an animal or plant are exposed to the air or buried in dry earth, they generally…

The plant that produces castor oil.

Castor Oil Plant

The plant that produces castor oil.

The plant that produces tobacco leaves used in the production of smoking tobacco.

Tobacco

The plant that produces tobacco leaves used in the production of smoking tobacco.

The plant that produces the vanilla bean.

Vanilla Plant

The plant that produces the vanilla bean.

The plant that produces an edible starch used primarily in cooking.

Arrowroot

The plant that produces an edible starch used primarily in cooking.

A plant yielding Jalap

Jalap

A plant yielding Jalap

A North American plant that only blooms every 80-100 years.

Century Plant

A North American plant that only blooms every 80-100 years.

A North American plant that only blooms every 80-100 years.

Century Plant

A North American plant that only blooms every 80-100 years.

Cacao is the plant that produces the cacao bean used for making chocolate.

Cacao

Cacao is the plant that produces the cacao bean used for making chocolate.

A plant that has a starchy root used in cooking.

Yam

A plant that has a starchy root used in cooking.

A South American palm that produce a seed for the which the plant is named.

Vegetable Ivory

A South American palm that produce a seed for the which the plant is named.

A South American plant that is sought after for its roots.

Ipecac

A South American plant that is sought after for its roots.

The Caoutchouc plant.

Caoutchouc

The Caoutchouc plant.

The coca plant is the source of the coca leaf used in medicine and in the production of cocaine

Coca

The coca plant is the source of the coca leaf used in medicine and in the production of cocaine

A plant or tree whose bark is harvested for the treatment of Malaria.

Cinchona

A plant or tree whose bark is harvested for the treatment of Malaria.

If the earth were uniformly covered with a layer of water, the passage of the moon over any place as at <em>a</em>, would cause the water to lose its globular form, become bulged at <em>a</em>, and <em>b</em>, and flattened at <em>c</em>, and <em>d</em>. In other words, the water would become <em>deeper</em> at <em>a</em>, and <em>b</em>, at the parts of the earth nearest and farthest from the moon and <em>shallower</em> in all places 90 degrees or at right angles to these points.

Lunar Tide

If the earth were uniformly covered with a layer of water, the passage of the moon over any place as…

Palms are one of the most well-known and extensively cultivated plant families. They have had an important role to humans throughout much of history. Many common products and foods are derived from palms, and palms are also widely used in landscaping for their exotic appearance, making them one of the most economically important plants. In many historical cultures, palms were symbols for such ideas as victory, peace, and fertility. Today, palms remain a popular symbol for the tropics and vacations.

Palm Tree

Palms are one of the most well-known and extensively cultivated plant families. They have had an important…

Pines are native to most of the Northern Hemisphere. In North America, they range from Arctic south to Nicaragua and Hispaniola, with the highest diversity in Mexico and California. In Eurasia, they range from Portugal and Scotland east to the Russian Far East, Japan, and the Philippines, and south to northernmost Africa, the Himalaya and Southeast Asia, with one species (Sumatran Pine) just crossing the Equator in Sumatra. Pines are also extensively planted in many parts of the Southern Hemisphere.

Pine Tree

Pines are native to most of the Northern Hemisphere. In North America, they range from Arctic south…

A group of trees or shrubs native to North America and Europe.

Ar'butus

A group of trees or shrubs native to North America and Europe.

A plant whose starchy compounds for treating poison arrow wounds

Arrowroot

A plant whose starchy compounds for treating poison arrow wounds

Sugar Cane is probably a native to India, but is now extensively cultivated throughout the tropical and warm temperate zones, of both hemispheres, in the West Indies, Southern United States, Guinea and Brazil, Mauritius and Bourbon, Bengal, Siam, China, Java, and the neighboring islands.

Sugar Cane

Sugar Cane is probably a native to India, but is now extensively cultivated throughout the tropical…

Tea consists of the dried leaves of a number of evergreen shrubs, natives of China or thereabouts. Tea is cultivated in China and India, as far north as latitude 45. It appears to thrive between 25 and 33 N. Latitude. It is extensively cultivated in Malacca, Java, and various portions of the English possessions in India. Tea was introduced into Europe by the Dutch in 1610.

Tea Plant

Tea consists of the dried leaves of a number of evergreen shrubs, natives of China or thereabouts. Tea…

The blossom of the Artichoke plant is edible and cultivated world wide.

Artichoke

The blossom of the Artichoke plant is edible and cultivated world wide.

Coffee is the berry of a tree found native in Abyssinia. The tree attains a height of 15 to 20 feet, but when cultivated, it is generally kept lower by cutting. The tree has shining green leaves, and bears beautiful white flowers, which are followed by reddish-brown berries, each of which contains two grains of coffee. The coffee-tree is cultivated extensively in Arabia, Java, the Philippines, Ceylon, Brazil, and in the West Indies.

Coffee

Coffee is the berry of a tree found native in Abyssinia. The tree attains a height of 15 to 20 feet,…

The images in this banner are birds, flowers and vines. In the center there are to prominent birds and a large plant.

Banner

The images in this banner are birds, flowers and vines. In the center there are to prominent birds and…

Cotton is a soft fiber that grows around the seeds of the cotton plant. The fiber is often spun into thread to make a soft breathable fabric.

Cotton

Cotton is a soft fiber that grows around the seeds of the cotton plant. The fiber is often spun into…

A Red Maple seedling with parts full-grown and bud at apex for further growth.

Maple Seedling

A Red Maple seedling with parts full-grown and bud at apex for further growth.

Bulbet-like tubers, such as are occasionally formed on the stem of a Potato-plant above ground.

Tubers

Bulbet-like tubers, such as are occasionally formed on the stem of a Potato-plant above ground.

Diagram of a shoot with its leaves 5-ranked, with a spiral line drawn from the attachment of one leaf to the next, and so only the parts on the side turned from the eye are fainter.

Five-ranked

Diagram of a shoot with its leaves 5-ranked, with a spiral line drawn from the attachment of one leaf…

Diagram of an opposite-leaved plant, with a single terminal flower.

Opposite-Leaved

Diagram of an opposite-leaved plant, with a single terminal flower.

Diagram of opposite-leaved plant with a cyne of three flowers; <em>a</em> the first flower, of the main axis: <em>b b</em>, those of branches.

Opposite-Leaved

Diagram of opposite-leaved plant with a cyne of three flowers; a the first flower, of the main…

Diagram of opposite-leaved plant with a cyne of three flowers; <em>a</em> the first flower, of the main axis: <em>b b</em>, those of branches. Flowers of the third order.

Opposite-Leaved

Diagram of opposite-leaved plant with a cyne of three flowers; a the first flower, of the main…

Parts of the same, two of each kind, separated and displayed; the torus or receptacle in the centre; <em>a</em> a sepal; <em>b</em>, a petal; <em>c</em>, a stamen <em>d</em>, a pistil.

Sedum Ternatum

Parts of the same, two of each kind, separated and displayed; the torus or receptacle in the centre;…