INDEX. 



933 



Organs, composition of, 36 



of circulation, 491 



of respiration, 562 

 Origin of cells, 14 

 Osmosis, 51 



causes of, 55 



explanation of, 54 



illustrations of, 56 



rapidity of, 52 

 Osmotic equivalent, 52 

 Osteoblaste, 36 ; 

 Otoliths, 881 

 Ova, 909 

 Ovary, 909 

 Ovum, 15 



changes of fertilization in, 18 



cleavage of, 15, 19 



fertilization of, 15 



holoblastic, 19 



meroblastic, 19 



of animals, classes of, 19 



of mammals, 18 



of rahrbit, size of, 25 



size of, 15 

 Ox, dentition in, 258 



fat, 123 



heart of, 509 



prehension' of food in, 234 



tongue of, 233 



urine of, 639 



Oxen, food required in fattening, 687 

 Oxygen, absorption of, by haemoglobin, 594 

 by the blood, 592 



influence of protoplasmic movements, 



83 

 Oxy haemoglobin, 476 



spectrum of, 594 



Pacing, 747 

 Palmitic acid, 122 

 Palmitin, 122 

 Pancreas, anatomy of, 639 



histological changes of, in digestion, 



413 



of the bird, 398 

 of the cat, 398 

 of the dog, 397 

 Pancreatic ferments, 403 

 isolation of, 404 

 fistulaa, 398 



juice, action of, on carbohydrates, 406 

 on fats, 406 

 on food-stuffs, 405 

 on proteids, 408 

 artificial, 405 



chemical composition of, 402 

 milk-curdling ferment of, 411 

 secretion of, 412 

 secretion, 396 



influence of nervous system on, 



415 



Pander, nucleus of, 21 

 Papillary muscles, 510 



Para-albumen, 103 

 Paraglobulin, 97, 487 

 Paramyosinogen, 706 

 Parapeptone, 99 

 Parotid fistula, 275 



gland, nervous supply of, 303 



saliva, composition of, 278 



secretion, 274 

 Pathetic nerve, 832, 875 

 Pathology, definition of, 1 

 Peas, composition of, 173 

 Penis, structure of, 916 

 Pepsin, 112 



preparation and characteristics of, 346 

 Pepsinogen, 358 

 Peptone, absorption of, 454 



characters of, 353 

 Peptones, 103 

 Perichondrium, 36 

 Peristalsis of the intestines, 448 

 Perspiration, 652 

 Phosphate of alkalies, 130 



of calcium, 133 



of magnesium, 134 



of magnesium and ammonium, 136 



of potassium, 130 



of sodium, 130 

 Phrenic nerves, influence of, in respiration, 



599 

 Physical process in cells, 37 



properties of proteids, 89 



of tissues, 61 

 Physiology, definition of, 1 



of inpvement, 701 

 Pig, dentition in, 261 



fat, 123 



prehension of food in, 235 



urine of, 640 



Pigment-cells, motions in chameleon, 75 

 Pinna, 877 

 Pitch of sounds, 758 

 Placenta of ruminants, 908 

 Plants and animals, distinction between, 5 



reproduction in, 903 



respiration in, 562 

 Plasma of blood, 483 

 Plasmine, 486 

 Pneumogastric, direct stimulation of, 550 



influence of section of, 551 



reflex action of, 550 



nerve, 834 



action of, on heart, 549 

 of frog, 545 



nerves, influence of, in respiration, 600 

 Polar cell, 18 

 Pons varolii, functions of, 821 



structure of, 819 

 Potassium carbonate, 129 



chlorides, 128 



phosphates, 130 



sulphate, 135 

 Prehension of food, 226 



of liquids, 236 



