"A Tooth is one of the hard bodies of the mouth, attached to the skeleton, but not forming part of it…
"The Toucan, in ornithology, is the popular name of any bird of the genus Rhamphastos. They are all…
"Trichina Spiralis is the name given to a peculiar nematoid worm which inhabits the muscles, usually…
"Trichina Spiralis is the name given to a peculiar nematoid worm which inhabits the muscles, usually…
"The walrus, also called the morse, seahorse, and sea cow, is now confined to the regions within the…
"Water Flea is a popular name for minute aquatic Crustaceans such as daphnia, cypris, and cyclops. In…
"Water Flea is a popular name for minute aquatic Crustaceans such as daphnia, cypris, and cyclops. In…
"Water Flea is a popular name for minute aquatic Crustaceans such as daphnia, cypris, and cyclops. The…
"Wolf is the vernacular name of certain species of the genus Canis. The common wolf (C. lupus) has very…
"Woodpecker is the popular name of the old Linnæan genus Picus, now greatly divided. Woodpeckers…
"Yak is a species of ox from the mountainous regions of Tibet. There are two races: the wild yak, generally…
"The most singular of the Callianiridae is the Venus' Girdle, Celestum Veneris, which…
"With a nearly hemispherical body, showing a long proboscis, at the root of which are eight branchiferous…
"One of the simplest of the tissues in the body is called the epithelium, and its cells are…
"There are in all two hundred and six seperate bones in the adult skelton. The teeth are not bones,…
"A, frontal bone; B, parietal bone; C, temporal bone; D, sphenoid bone; E, malar bone; F, upper jawbone;…
"The spine or backbone, serves as a support for the whole body. It is made up of a number of…
"The ribs are long, flat, and curved bones which bend round the chest somewhat like the hoops…
"The foot is built in the form of a half-dome or half-arch. This is to afford a broad, strong support…
"The bones are fastened together, kept in place, and their movements limited, by tough and strong bands,…
"The bones are fastened together, kept in place, and their movements limited, by tough and strong bands,…
"When a bone is broken, blood trickles out between the injured parts, and afterwards gives place to…
"When a bone is broken, blood trickles out between the injured parts, and afterwards gives place to…
"The involuntary muscles consist of ribbon-shaped bands which surround hollow tubes or cavities…
"A single muscle rarely or never contracts alone, but always in harmony with a number of other muscles.…
"Tendons are white, glistening cords, or straps, which connect the muscles with the bones." —…
"In the figure on the left are seen the artery and vein of a villus. In the right figure are represented…
"In nearly every tissue of the body there is a marvelous network of vessels, precisely like the lacteals,…
"Cross-section of One Half of a Human Hair. A hair is made up of horny cells of the outer layer of the…
"Lizard is the popular name of numerous reptiles having usually two pairs of limbs and an elongated…
"Concave or Adherent Surface of the Nail. A, border of the root; B, whitish portion…
"Nerve tissue is really made up of a great number of distinctive units called nerve cells.…
"The Lump Fish, or Sucker, is named from the clumsiness of its form. The back is arched and sharp, the…
"Mammoth is a species of extinct elephant, the fossil remains of which are found in European, Asiatic…
"Mandrake is a perennial herb. From the rude resemblance of the bifurcated root to the human figure…
"The Metacenter is the point of intersection of the vertical line passing through the center of gravity…
"The Octopus is the typical genus of the family Octopodidæ. The body is oval, warty, or cirrose,…
"A Piece of Hair from the Scalp infested with a Mold which produces Ringworm. Ringworm may occur anywhere…
"A Compound Microscope. The appearance of the various structures and tissues of the human body as revealed…
"A Persian sword, whence Horace speaks of the Medus acinaces. The acinaces was a short and…
"The Penguins are aquatic birds confined to the high S. latitudes or both hemispheres, where they congregate…
"signifies, literally, a goat skin. According to ancient mythology, the aegis worn by Jupiter was the…
"The Polecat is one of the Mustelinæ, akin to the marten, but with a broader head, a blunter snout,…
"Lucian, the humorous satirist, was a native of Samosata, in Syria, and flourished towards the end of…
"The rim or border of anything, especially of a shield or chariot. The trim of the large round shield…
"The battering-ram, was used to batter down the walls of besieged cities. It consisted of a large beam,…
"Homer describes in various passages an entire suit of armour, and we observe that it consisted of the…
"Homer describes in various passages an entire suit of armour, and we observe that it consisted of the…
"The Raccoon, or Racoon, is a handsome animal, about the size of a large cat, brown furry hair, tail…
"The Raven is a large bird of the crow family. The raven has played an important part in mythology and…
"Rice is a well known genus of grasses, having panicles of one-flowered spike-lets, with two very small…
"Salamander is a genus of reptiles closely allied to the frog, from which it differs in having an elongated…