Outlines of comparative physiology : touching the structure and development of the races of animals, living and extinct / by Louis Agassiz and A.A. Gould.

Date:: 1851

Credit: Outlines of comparative physiology : touching the structure and development of the races of animals, living and extinct / by Louis Agassiz and A.A. Gould. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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$Animals and plants, differences be- tween, 57—74; resume, 75. An'imate, possessed of animal life. Aunel'ida, or Annel'ids, digestive organs of the, 322—324 ; respira- tion, 382. Annula'ted (Lat. annulus, a ring), when an animal or part appears to he composed of a succession of rings. Anoplothe'rium (Gr. dvoirXoQ, un- armed ; Orjpiov, beast), an ex- tinct mammal, somewhat resem- bling the pig, hut unpro\ided with tusks or offensive arras, 680. An'ourous (Gr. a, without; ovpa, a tail), tail-less. Anten'na (Lat. a yard-arm), applied to the jointed feelers, or horns, upon the heads of insects and Crustacea; and sometimes to the analogous parts which are not jointed in worms and other ani- mals. Anthozo'a (Gr. dvQog, a flower; an animal), polyps (in- cluding the actinia and allied species), commonly called animal flowers. Antiperistalt'ic (Gr. dvri, against; and peristaltic), when the vermi- cular contractions of a muscular tube follow each other in a direc- tion the reverse of the ordinary one; see Peristaltic. Ant'lia (Lat. a pump), restrictively apphed to the spiral instrument of the mouth of butterflies and allied insects, by which they pump up the juices of plants. Aor'ta (Gr. dopry, the wind-pipe; and also the name of the great vessel springing from the heart, which is the trunk of the systemic arteries); it is exclusively applied in the latter sense in modern anatomy. Aphid'ian, belonging to the aphis. A'phis (Greek), the aphis, or plant- louse, one of the articulata, alter- nate generation of the, 526. Ap'ical (Lat. apea^, the top of a cone), belonging to the pointed end of a cone-shaped body. Ap'odal (Gr. a, without; rroSa, feet), footless, without feet or locomotive organs; fishes are so called which have no ventral fins. Apoph'ysis (Greek), a projection from the body of a bone. Apparatus of motion, 205—227. Ap'tera (d,without; Trrepov, awing), wingless insects, xxii. Ap'terous (Gr. d, without; uTspov, a wing), wingless species of in- sects or birds. Aquat'ic (Lat. aqua, water), living in water. Aquat'ic animals, water tubes of,403. A'queous, like water. A'queous humour of the eye, 127. Arach'nida (Gr. dpa^vr], a spider), a class of articulates ; as spiders and allied animals. Arach'nidae, or Arach'nids, digestive organs of the, 326 ; jaws, 337 ; respiration, 385. Arach'noid membrane, 85. Arbores'cent (Lat. arbor, a tree), branched like a tree. Arc'tic (Gr. 'Kqktoq, the Bear, a northern constellation, thus signi- fying northern) fauna, the, 602 —604. Are'olar (Lat. areola, a nipple tissue, 41. Aristotle’s lantern, jaws of the Echi- nidae, so called, 335. Arm of man, 281; corresponding organ in other animals, 282—286. Ar'teries, 357. Arthro'dial (Gr. dpOpov, a joint); it is restricted to that form of joint in which a ball is received into a shallow cup. Articula'ta (Lat. articulus, a joint), a department of the animal king- dom, consisting of animals with$