ClipArt ETC
"A genus of Orthopterous insects, having an oval or orbicular flattened body, the head hidden beneath the large plate of the prothorax, long thread-like antennae, and wings folded only longitudinally. The elytra are parchment-like, and the wings are sometimes very imperfectly developed, particularly in the females, as in the case of the common cockroach." — Chambers' Encyclopedia, 1875

Male Cockroach

"A genus of Orthopterous insects, having an oval or orbicular flattened body, the head hidden beneath…

"A genus of Orthopterous insects, having an oval or orbicular flattened body, the head hidden beneath the large plate of the prothorax, long thread-like antennae, and wings folded only longitudinally. The elytra are parchment-like, and the wings are sometimes very imperfectly developed, particularly in the females, as in the case of the common cockroach." — Chambers' Encyclopedia, 1875

Female Cockroach

"A genus of Orthopterous insects, having an oval or orbicular flattened body, the head hidden beneath…

"Crane-fly (Tipula oleracea): a, eggs; b, larva; c, pupa case as left by the insect, sticking out of the eath; d, perfect insect." — Chambers' Encyclopedia, 1875

Crane Fly

"Crane-fly (Tipula oleracea): a, eggs; b, larva; c, pupa case as left by the insect, sticking out of…

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops under very high powers. Similar series of phases in the order of the small letters in each case, and with the times of observation attached. At f and g occurs the breaking up of the filament into rodlets." — The Encyclopedia Britannica, 1910

Bacillus Ramosus

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops…

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops under very high powers. Similar series of phases in the order of the small letters in each case, and with the times of observation attached. At f and g occurs the breaking up of the filament into rodlets." — The Encyclopedia Britannica, 1910

Bacillus Ramosus

"The various phases of germination of spores of Bacillus ramosus, as actually observed in hanging drops…

"Road-racer. A full roadster would have the handles a little higher relatively to the saddle, and would be provided with mud-guards, free-wheel and sometimes a gear-case and variable speed gear." — The Encyclopedia Britannica, 1910

Road-Racer

"Road-racer. A full roadster would have the handles a little higher relatively to the saddle, and would…

"A lady's bicycle with gear-case and dress-guard. The rear frame of the "diamond" type is subjected to very small stresses due to vertical load. The front fork and steering post are subject to bending moment due to the reaction from the ground." — The Encyclopedia Britannica, 1910

Womans Bike

"A lady's bicycle with gear-case and dress-guard. The rear frame of the "diamond" type is subjected…

"One end of the cup-adjusting hub, with inward bearings. The cones are formed of one piece with the spindles, and the adjusting cp C is screwed in the end of the hub shell, and locked in position by the screwed locking-ring R. The figure also illustrates a divided spindle for facilitating the removal of the tire for repair when required without disturbing the wheel, bearings, chain or gear-case. The chain side of the hub-spindle, not shown in the figure, is secured to the frame in the usual way; on the left side the spindle S projects very little beyond the adjusting cup. A distance washer W is placed between the end of the spindle S and the fork-end F. A detachable screw-pin, or the footstep, P, passes through the washer W, and is screwed into the end of the spindle S, the hexagod head of the detachable pin drawing all the parts securely together." — The Encyclopedia Britannica, 1910

Cup-adjusting Hub

"One end of the cup-adjusting hub, with inward bearings. The cones are formed of one piece with the…

"The "roller" chain consists of a series of outside and inside links. The outside link A is made up of two steel side plates P united by two shouldered rivets R. The inside link B consists of two side plates P united by two tubular pieces T, which form bushes for the rivets R and pivots for the rollers L. The rivets, bushes and rollers are case-hardened." — The Encyclopedia Britannica, 1910

Bicycle Chain

"The "roller" chain consists of a series of outside and inside links. The outside link A is made up…

"Mirror case illustrating storming of the Castle of Love, French, about 14th century, South Kensington museum." — The Encyclopedia Britannica, 1893

Ivory Carving

"Mirror case illustrating storming of the Castle of Love, French, about 14th century, South Kensington…

"Morse magnetic telegraph will be understood by reference to the accompanying diagram, which represents the construction and arrangement of this form of telegraph. F and E are pieces of soft iron surrounded by coils of wire, which are connected at a and b with wires proceeding from a galvanic battery. When a current is transmitted from a battery located one, two, or three hundred miles, as the case may be, it passes along the wires and into the coils surrounding the pieces of soft iron F and E, thereby converting them into magnets. Above these pieces of soft iron is a metallic bar or lever, A, supported on its center, and haing at one end the arm D, and at the other a small steel point, o. A ribbon of paper, p h, rolled on the cylinder B, is drawn slowly and steadily off by a train of clock-work, K, moved by the action of the weight P on the cord C. This clock-work gives motion to two metal rollers, G and H, between which the ribbon of paper passes, and which, turnin in opposite directions, draw the paper from the cylinder B. The roller H has a groove arond its circumference (not represented in the engraving) above which the paper passes. The steel point, r, or the lever, A, is also directly opposite this groove. The spring r prevents the point from resting upon the paper when the telegraph is not in operation." —Wells, 1857

Magnetic Telegraph

"Morse magnetic telegraph will be understood by reference to the accompanying diagram, which represents…

"In the case of limed stock the hides, at the proper stage, are withdrawn from the pits and stretched over an unhairing beam." —The Encyclopedia Britannica, 1910

Tanner's Beam

"In the case of limed stock the hides, at the proper stage, are withdrawn from the pits and stretched…

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of an ordinary annular lens, which the other face, though straight in the vertical, is ground to the required curve in the horizontal plane. The rays f'fc falling upon the lens x converge to the vertical focal plane ff and afterwards diverge through the smaller horizontal angle x'f'x', and so for any other case." —The Encyclopedia Britannica, 1910

Differential Lens

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius…

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of an ordinary annular lens, which the other face, though straight in the vertical, is ground to the required curve in the horizontal plane. The rays f'fc falling upon the lens x converge to the vertical focal plane ff and afterwards diverge through the smaller horizontal angle x'f'x', and so for any other case." —The Encyclopedia Britannica, 1910

Differential Lens

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius…

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of an ordinary annular lens, which the other face, though straight in the vertical, is ground to the required curve in the horizontal plane. The rays f'fc falling upon the lens x converge to the vertical focal plane ff and afterwards diverge through the smaller horizontal angle x'f'x', and so for any other case." —The Encyclopedia Britannica, 1910

Differential Lens

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius…

A form of pen used for drawing lines of even thickness. It commonly consists of two blades which hold ink between them. The distance apart of the points being adjusted by a screw to conform to the desired width of the line.

Ruling Pen

A form of pen used for drawing lines of even thickness. It commonly consists of two blades which hold…

A box or case of hard potery in which porcelain and othe delicate ceramic wares are inclosed for baking.

Saggars

A box or case of hard potery in which porcelain and othe delicate ceramic wares are inclosed for baking.

"The first alteration to be noticed in the double-acting engine is that of the cylinder. To insure its double action, it is necessary to provide, at each end of the cylinder, a means of admission of steam from the boiler, and of escape for the steam to the condenser. Hence the double action, which means that the piston is both raised and depressed by the force of steam. For this purpose, a steam box is fixed to each end of the cylinder, communicating, in the one case with the upper, in the other with the lower, surface of the piston. B is the upper, and and B' the lower, steam box. Each of these boxes is furnished with two valves." —Comstock, 1850

Double-acting Cylinder

"The first alteration to be noticed in the double-acting engine is that of the cylinder. To insure its…

"The first alteration to be noticed in the double-acting engine is that of the cylinder. To insure its double action, it is necessary to provide, at each end of the cylinder, a means of admission of steam from the boiler, and of escape for the steam to the condenser. Hence the double action, which means that the piston is both raised and depressed by the force of steam. For this purpose, a steam box is fixed to each end of the cylinder, communicating, in the one case with the upper, in the other with the lower, surface of the piston. B is the upper, and and B' the lower, steam box. Each of these boxes is furnished with two valves." —Comstock, 1850

Double-acting Cylinder

"The first alteration to be noticed in the double-acting engine is that of the cylinder. To insure its…

"Camera obscura strictly signifies a darkened chamber, because the room must be darkened, in order to observe its effects. To witness the phenomena of this instrument, let a room be closed in every direction, so as to exclude the light. Then from an aperture, say of an inch in diameter, admit a single beam of light, and the images of external things, such as trees and houses, and persons walking the streets, will be seen inverted on the wall opposite to where the light is admitted, or on a screen of white paper, placed before the aperture. The reason why the image is inverted will be obvious, when it is remembered that the rays proceeding from the extremities of the object must converge in order to pass through the small aperture; and as the rays of light always proceed in straight lines, they must cross each other at the point of admission. Thus the pencil a, coming from the upperpart of the tower, and proceeding straight, will represent the image of the part at b, while the lower part c, for the same reason, will be represented at d." —Comstock, 1850

Camera Obscura

"Camera obscura strictly signifies a darkened chamber, because the room must be darkened, in order to…

"Camera obscura strictly signifies a darkened chamber, because the room must be darkened, in order to observe its effects. To witness the phenomena of this instrument, let a room be closed in every direction, so as to exclude the light. Then from an aperture, say of an inch in diameter, admit a single beam of light, and the images of external things, such as trees and houses, and persons walking the streets, will be seen inverted on the wall opposite to where the light is admitted, or on a screen of white paper, placed before the aperture. The reason why the image is inverted will be obvious, when it is remembered that the rays proceeding from the extremities of the object must converge in order to pass through the small aperture; and as the rays of light always proceed in straight lines, they must cross each other at the point of admission. Thus the pencil a, coming from the upperpart of the tower, and proceeding straight, will represent the image of the part at b, while the lower part c, for the same reason, will be represented at d." —Comstock, 1850

Camera Obscura

"Camera obscura strictly signifies a darkened chamber, because the room must be darkened, in order to…

"The coils of wire may begin near one pole of the magnet and terminate near the other, or the wire may consist of shorter pieces wound over each other, on any part of the magnet. In either case, the ends of the wire, where several pieces are used, must be soldered to two strips of tinned sheet copper, for the combined positive and negative poles of the wires. To form the magnet, these pieces of copper are made to commnicate with the poles of the battery, by means of cups containing mercury, as shown in the figure, or by any other method." —Comstock, 1850

Magnet

"The coils of wire may begin near one pole of the magnet and terminate near the other, or the wire may…

"Break lathes can take in work of considerable length as well as of large diameter,—the treble-geared headstock and all other parts being in their case made of sufficient strength to bear the heavy strains which result from the increased size and weight of the work, a quality in which gap lathes are not unfrequntly deficient." —The Encyclopedia Britannica, 1903

Break Lathe

"Break lathes can take in work of considerable length as well as of large diameter,—the treble-geared…

"For work of moderate size shaping machines, which are more recent indroduction than either slotting or planning machines, both of which they resemble in theiraction, are in some respects more convenient. The slide which carries the tool is in their case horizontal, and its short but variable strokes are in a direction transverse to the bed, along which it can travel, just as a slide-rest travels along a lathe bed." —The Encyclopedia Britannica, 1903

Shaping Machine

"For work of moderate size shaping machines, which are more recent indroduction than either slotting…

"Nachet's Portable Compound and Dissecting Microscope, as packed in case." —The Encyclopedia Britannica, 1903

Portable Microscope

"Nachet's Portable Compound and Dissecting Microscope, as packed in case." —The Encyclopedia Britannica,…

"In this the four lateral planes are rectangular and equal; they may be either oblong or square; in the latter case the form is the cube." —The Encyclopedia Britannica, 1903

Primitive Crystal

"In this the four lateral planes are rectangular and equal; they may be either oblong or square; in…

A casing-in machine. <em>a</em>, cases; <em>b</em>, side of case-hopper; <em>c</em>, paste box; <em>d</em>, head clamp rod; <em>e</em>, head clamp.

Casing

A casing-in machine. a, cases; b, side of case-hopper; c, paste box; d,…

A case-making machine

Case-making

A case-making machine

The larva of a <em>Coleophora malivorella</em>

Apple Case-Bearer

The larva of a Coleophora malivorella

The pupa of a <em>Coleophora malivorella</em>

Apple Case-Bearer

The pupa of a Coleophora malivorella

<em>Coleophora malivorella</em> or Apple case-bearer adult moth

Apple Case-Bearer

Coleophora malivorella or Apple case-bearer adult moth

A case for decorative pillow in African homes.

Leather Pillow Case

A case for decorative pillow in African homes.

Fructification of a Jungermannia, its cellular spore-stalk, surrounded at base by some of the leaves, at summit the 4-valved spore-case opening, discharging spores and elaters.

Jungermannia

Fructification of a Jungermannia, its cellular spore-stalk, surrounded at base by some of the leaves,…

Magnified section of a spore-case with some spores.

Spore-Case

Magnified section of a spore-case with some spores.

A cylinder with a triple threaded screw in a water tight case that revolves ater to the top for the irrigation of land.

Archime' dean Screw

A cylinder with a triple threaded screw in a water tight case that revolves ater to the top for the…

Horsetail, view spore-case from the under side of the shield-shaped body.

Horsetail

Horsetail, view spore-case from the under side of the shield-shaped body.

A spore-case from the Walking-Fern, Camptosorus, just bursting by the partial straightening of the incomplete ring.

Walking-Fern

A spore-case from the Walking-Fern, Camptosorus, just bursting by the partial straightening of the incomplete…

Spore-case of the Schizea Pusilla, detached, opening lengthwise.

Schizea Pusilla

Spore-case of the Schizea Pusilla, detached, opening lengthwise.

Inside view of one of the bracts and spore-case.

Lycopodium Carolinianum

Inside view of one of the bracts and spore-case.

Open 4-valved spore-case of a Selaginella, and its four large spores (macrospores).

Selaginella

Open 4-valved spore-case of a Selaginella, and its four large spores (macrospores).

Section of a spore-case containing macrospores

Isoetes

Section of a spore-case containing macrospores

Mnium cuspidatum's spore-case, with top of stalk.

Mnium

Mnium cuspidatum's spore-case, with top of stalk.

Mnium cuspidatum's spore-case, with top of stalk, focusing on the lid and outside of the peristome.

Mnium

Mnium cuspidatum's spore-case, with top of stalk, focusing on the lid and outside of the peristome.

Summit of an open spore-case of a Moss, which has a peristome of 16 pairs of teeth.

Moss

Summit of an open spore-case of a Moss, which has a peristome of 16 pairs of teeth.

Spore-case of a Physcomitrium Pyriforme.

Physcomitrium Pyriforme

Spore-case of a Physcomitrium Pyriforme.

Spore-case and detached lid of a Physcomitrium Pyriforme.

Physcomitrium Pyriforme

Spore-case and detached lid of a Physcomitrium Pyriforme.

One of the frondose Liverworts, Steetzia, otherwise like a Jungermannia; the spore-case not yet protruded from its sheath.

Liverworts

One of the frondose Liverworts, Steetzia, otherwise like a Jungermannia; the spore-case not yet protruded…

Spore-case torn out, and spores; one figure of the spores united; the other of the four separated.

Riccia

Spore-case torn out, and spores; one figure of the spores united; the other of the four separated.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

A case or caddice made by the larvae of Trichoptera.

Caddice

A case or caddice made by the larvae of Trichoptera.

The Croton Bug, egg-case.

Croton

The Croton Bug, egg-case.