"A deep-sea dredge. The iron lip of the sack scrapes shells mud, etc., into it, and small animals are…
"One third of the sea bottom is covered with a soft gray ooze or mud made up entirely of the shells…
A decorative divider with a man in the center, surrounded by plants and animals.
A decorative divider with wheat in the center, surrounded by dogs, rabbits, and other plants.
"Fish, trilobites, brachiopods, corals, and graptolites of the Palaeozoic epoch." -Taylor, 1904
Some reptiles of the Late Paleozoic Age. The six-foot man is drawn to the same scale as the other animals.
Some Mesozoic reptiles. Shown are the Brontosaurus, Stegosaurus, Pterodactyl, Camptosaurus, and the…
Some Late Mesozoic reptiles. Shown are the Tyrannosaurus, Trachodon, Triceratops, Pterodactyls, and…
Mammals from the Oligocene age. Shown are the Titanothere, Entelodont, Hyracodon, Uintathere, and the…
A freshwater hydra, magnified. Example of an animal with no skeleton. There are animals without a skeleton…
Plan of the body in cross-section. The systems in the body are arranged in a certain way which is the…
"The Ferret was imported into Europe from Africa, and was well known to the Romans, being anciently…
Leather making consists essentially of the skins of animals chemically altered by the vegetable principle…
The name given to various animals included in the class Amphibia and in the order Urodela of that class.…
The name of animals of the class Arachnida. Scorpions have an elongated body, suddenly terminated by…
Blood corpuscles of a frog. Highly magnified. The appearance of blood cells in different animals varies…
The popular name given to a number of animals of the subkingdom Coelenterata and class Actinozoa, including…
The name of a genus of gasteropodous mollusca. These animals are slug-like in appearance, and derive…
The skeleton of a haddock. In some species such as the haddock, there is a modified form of the coracoid…
A diagram of a mollusca. Mollusca are soft-bodied animals that are usually protected by an external…
A diagram of a radiata (the starfish) whose organization is much less complete than that of most other…
The image on the left are the teeth of a carnivora or flesh-eating animal. The teeth on the right belong…
Ruminants (those animals that chew the cud), as the sheep, have a stomach with four cavities. Labels:…
Ruminants (those animals that chew the cud), as the ox, have a stomach with four cavities. Labels: 1,…
The illustration exhibits the typical characters of the red blood cells in the main divisions of Vertbrata.…
"The animals have a well-developed shell, the form of which is elegant and delicate in structure. They…
"The animals have a well-developed shell, the form of which is elegant and delicate in structure. They…
"The animals have a well-developed shell, the form of which is elegant and delicate in structure. They…
"In the genus Cassis the shell is oval, convex, and the spire is not of considerable height.…
"In the genus Cassis the shell is oval, convex, and the spire is not of considerable height.…
"In the genus Cassis the shell is oval, convex, and the spire is not of considerable height.…
"In the genus Cassis the shell is oval, convex, and the spire is not of considerable height.…
"In the genus Cassis the shell is oval, convex, and the spire is not of considerable height.…
"In the genus Cassis the shell is oval, convex, and the spire is not of considerable height.…
"Cuttlefish are probably the most interesting animals of [the cephalopoda] order. They live for five…
"The lowest division of articulate animals is the Crustacea. Their name signifies a hard crust of covering,…
"The senses of touch, smell, taste and hearing are very slightly developed in birds. The organ of sight…
"The falcons, it may be said, realize the ideal of a bird of prey. They feed only on living animals,…
"When pressed by hunger it shows no fear in attacking live animals, which makes it dreaded by the shepherds…
"The Conversion of St. Eustace. By Albrecht Dürer. From the engraving on copper." -Heath, 1901
"The Knight, Death, and the Devil. By Albrecht Dürer. From the engraving on copper." -Heath, 1901