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e opossums, of which there are many species. See Opossum. [Written also Didelphis.] See Illustration in Appendix. Cuvier.

A genus of large extinct Eocene mammals from Wyoming; -- called also Uintatherium. See Illustration in Appendix.

c sandstones; others were five-toed and quadrupedal. See Illust. of Compsognathus, also Illustration of Dinosaur in Appendix.

air bladder acts as a lung, and the nostrils open inside the mouth. See Ceratodus, and Illustration in Appendix.

out as large as the hippopotamus; -- so named because of its two large front teeth. See Illustration in Appendix.

Comparison or illustration by contraries.

ers. Its remains have been found beneath the peat of swamps in Ireland and England. See Illustration in Appendix; also Illustration of Antler. -- Cape elk (Zoöl.), the eland.

; the act of elucidating or that which elucidates, as an explanation, an exposition, an illustration; as, one example may serve for further elucidation of the subject.

rmed by diverticula of the alimentary canal. Balanoglossus is the only known genus. See Illustration in Appendix.

An instance serving for illustration of a rule or precept, especially a problem to be solved, or a case to be determined, as an exercise in the application of the rules of any study or branch of science; as, in trigonometry and grammar, the principles and rules are illustrated by examples.

ovable ocelli, or compound eyes made up of numerous ocelli. See Ocellus. Description of illustration: a b Conjunctiva; c Cornea; d Sclerotic; e Choroid; f Cillary Muscle; g Cillary Process; h Iris; i Suspensory Ligament; k Prosterior Aqueous Chamber between h and i; l Anterior Aqueous Chamber; m Crystalline Lens; n Vit…

cial angle (Anat.), the angle, in a skull, included between a straight line (ab, in the illustrations), from the most prominent part of the forehead to the front efge of the upper jaw bone, and another (cd) from this point to the center of the external auditory opening. See Gnathic index, under Gnathic.…

Well known; well understood; common; frequent; as, a familiar illustration. That war, or peace, or both at once, may be As things acquainted and familiar to us. Shak. There is nothing more familiar than this. Locke.

rica, where the dog flea (P. canis) takes its place. See Aphaniptera, and Dog flea. See Illustration in Appendix. A flea in the ear, an unwelcome hint or unexpected reply, annoying like a flea; an irritating repulse; as, to put a flea in one's ear; to go away with a flea in one's ear. -- Beach flea, Black flea, etc. S…

ormerly used as a valve in the steam engine, and now for various other purposes. In the illustration, a leads to the upper end of a steam engine cylinder, and b to the lower end; c is the steam pipe, and d the exhaust pipe.

pressed against a piece on another shaft that the two will revolve together; as, in the illustration, the cone a on one shaft, when thrust forcibly into the corresponding hollow cone b on the other shaft, compels the shafts to rotate together, by the hold the friction of the conical surfaces gives. (b) A toothed clutch…

An ornamental figure or illustration fronting the first page, or titlepage, of a book; formerly, the titlepage itself.

The parasitic worm that causes the gapes in birds. See Illustration in Appendix.

toid worms, including the hairworms or hair eels (Gordius and Mermis). See Gordius, and Illustration in Appendix.

One who collects illustrations from various books for the decoration of one book.