ClipArt ETC
"Footprints resembling those birds are found on red argillaceous sandstones in the valley of Connecticut river, North America. These sandstones, though long considered of a much older date, were referred by the brothers Rogers to the oolitic period." — Chambers, 1881

Bird-Tracks

"Footprints resembling those birds are found on red argillaceous sandstones in the valley of Connecticut…

This illustration shows the track of a Brontozoum Giganteum. The trac is actually eighteen inches long, with the dinosaur standing over twenty feet high.

Brontozoum Giganteum

This illustration shows the track of a Brontozoum Giganteum. The trac is actually eighteen inches long,…

The Greyhound as a show dog is judged as follows: height and weight, ranging from 23 to 27 in. and from 40 to 70 lbs.; skull rather wide between the ears and flat on the top, with powerful, though not clumsy, jaws, and very strong teeth; eyes dark in color, and full of fire; ears rather small, and fine in texture; neck long and powerful (to enable it to reach the hare) yet graceful looking; chest of fair width, and very deep; body rather long, extremely powerful, especially at the loins, and slightly arched -- the back ribs being short, make the body appear tucked up; shoulders sloping; fore legs set in well under the dog, straight and powerful, with round, compact feet, the knuckles of the toes being well developed; hind quarters very powerful, with muscular thighs and well-bent stifles; tail long, and carried low; colors black, red, fawn, brindled, blue, white, either whole-colored or marked.

Greyhound

The Greyhound as a show dog is judged as follows: height and weight, ranging from 23 to 27 in. and from…

This is a detachable harness type of horse tack that allows a horse or other equine to pull various horse-drawn vehicles such as a carriage, wagon or sleigh. Harnesses may also be used to hitch animals to other loads such as a plow or canal boat.

Horse Detaching Harness

This is a detachable harness type of horse tack that allows a horse or other equine to pull various…

A horse harness is a type of horse tack that allows a horse or other equine to pull various horse-drawn vehicles such as a carriage, wagon or sleigh. Harnesses may also be used to hitch animals to other loads such as a plow or canal boat.

Original Use Horse Harness

A horse harness is a type of horse tack that allows a horse or other equine to pull various horse-drawn…

An illustration of to men hunting near a river.

Two Men Hunting

An illustration of to men hunting near a river.

"An implement for clearing away snow from roads, railways, etc. a, body of plow; b, caboose for implements and workmen; c, movable wings for widening the cuttings; c1, doors which give access to leading truck for oiling, etc.; d, cupola; e, headlight; f, iron plates, scrapers, or shoes which remove snow from the outer margins of the track; f, adjustable aprons which clean out the snow from between the tracks flush with the wheel flanges; g, intermediate apron; h, draw-bar for hauling the plow when not in use; i, adjustable scraper for removing hard-packed snow or ice from the inner side of the rails." —Whitney, 1889

Wing Snow Plow

"An implement for clearing away snow from roads, railways, etc. a, body of plow; b, caboose for implements…

A motor vehicle wheel track sanding device including a sand storage tank, a hoper mounted over a wheel of a motor vehicle, a pipe connecting the interior of the hopper to the storage chamber, an auger disposed within the pipe for transferring the sand from the storage tank to the hopper, and a motor for rotating auger.

Track Sanding Apparatus

A motor vehicle wheel track sanding device including a sand storage tank, a hoper mounted over a wheel…

This illustration shows the three-toed tracks of birds and reptiles.

Tracks

This illustration shows the three-toed tracks of birds and reptiles.

Trajectory is the path a moving object follows through space. A trajectory can be described mathematically either by the geometry of the path, or as the position of the object over time.

Trajectory

Trajectory is the path a moving object follows through space. A trajectory can be described mathematically…

"The highest of the White Mountains is Mount Washington. We can go in an ordinary train to the foot of this mountain, and from there can ride to its summit over one of the oddest little railroads in the world. The mountain is more than a mile high, and this little railroad goes right up to its top. In some places the track is so steep that it looks more like a ladder than a railroad, and the cars which go up it are at times at such an angle that you would think they would slide to the bottom."—Carpenter, 1898

Railroad Up Mount Washington

"The highest of the White Mountains is Mount Washington. We can go in an ordinary train to the foot…