INDEX 



793 



Olfactory centre, 500 



nervous mechanism, 563 

 organ, 563 

 sensations, 546 

 stimulus, 564 

 Olivary bodies, 474 

 Omasum, 197 

 canal, 197 



contents, character of, 199 

 function, 198, 199 

 ingesta, movement of, 198, 209, 



210 

 laminae, 197 



function, 198 

 nerve-supply, 198 

 position, 197 

 Oncometer, Roy's, 315 

 Ophthalmia, specific, 562 

 Ophthalmoscope, 541 

 Opsonin, 16 



Optic chiasma, 540, 549 

 disc, 539 

 nerve, 531, 539 

 thalamus, 377, 471, 478 

 Optics, physiological, 555 

 Optogram, 561 

 Organ of Corti, 579 

 Ornithin, 324, 753 

 Osazone, 760 



Osmosis, 269, 270, 271, 272. See 



also Absorption and Lymph 



explanation of, 270, 271 



osmotic pressure, 269, 271, 272 



and lymph formation, 



272 

 how ascertained, 271 

 hypertonic solutions, 



272 

 hypotonic solutions, 



272 

 isotonic solutions, 272 

 Osteomalacia in cattle, 751 

 Ostium abdominale, 697 

 Ostrich, rutting of, 691 

 Otoliths, 582 

 Ovaries, effect of removal, 692 



influence on general develop- 

 ment, 692 

 on genital organs, 292 

 on lactation, 293, 725 

 on mammary gland, 292, 



293, 725 

 on metabolism, 293 

 on cestrus, 292, 692 

 on psychic condition, 293 

 Ovulation, 702 

 Ovum, 696 



blastodermic vesicle, 705 

 epiblast, 706 



fertilisation, 271, 700, 703 

 hypoblast, 706 



Ovum, implantation of, 714 



maturation of, 701 



mesoblast, 706 



segmentation, 704 



structure, 696 

 Ox, absorption of food, 287 



bile, 240, 241, 242 



blood, 2, 12, 17, 24 



dentition, 741 



digestion, stomach, 194, 207 

 intestines, 222 



erection in bull, 695 



essential diet, 368 



fattening, 369 



fasces, 234 



life, average duration, 743 



lymph, 268 



maturity, 694 



metabolism, 346, 366, 370 



pancreatic fluid, 258 



puberty, 694 



rumination, 204, 222 



salivary secretion, 161, 162, 164 



sweating, 307 



temperature, 374 



urine, 336 

 Oxidase ferment, 130, 326, 372 

 Oxidases, 130, 372, 410, 764, 765 

 Oxidations, 129, 130, 326, 358, 365, 



372, 408, 411, 764 

 Oxygen, 748 



deficiency in, 130 



deficit (nutrition), 357 



excess of, 131 



in air, 117 



in blood, 1, 121, 123 



in body fluids, 129, 748 



in muscle, 129, 408, 411 



in swim -bladder, 127 

 intramolecular, 130 



liberation in tissues, 128 

 Oxyhasmoglobin, 10, 123 



Pace. See Speed 

 Paces of horse, notation of, 62 1 

 Pacinian corpuscles, 426, 684 

 Pain centre, 571 



sense, 570 

 Palate, hard, 155 



soft, 158 

 Pale muscle, 389,391, 392,403,418, 



419 

 Palmitin, 358, 757 

 Pancreas, 251 



abscess, 263 



cell changes in, 257, 258 



cells of, 257, 258 



internal secretion, 261, 358 



removal, 259, 286 



structure of, 262 



