88o 



INDEX 



Association fibres, 673, 691 

 Astatic system of magnets, 536 

 Astigmatism, irregular, 796 



regular, 799, 860 

 Atelectasis, 210 

 Atropia, action of, on heart, 141, 174 



on digestive secretions, 347 



on pupil, 793 



on salivary secretion, 377 

 Attraction sphere, 18 



in nerve cells, 661 

 Auditory centre, 749 



nerve, 723 



vesiibular branch of, 689 



ossicles, 838, 841-843 

 Auerbach's plexus, 281 

 Augmentation of heart's beat, 133, 175 



primary, 136, 138 



secondary, 136 

 Aura, 753, 758 

 Auriculo-ventricular junction, stimulation 



of, 135, 174 



Auto-digestion of stomach, 330, 384 

 Automatic actions of spinal cord, 712-715 

 Avalanche theory, 595 



Bacteria in intestine, 316, 357 

 Bactericidal action of gastric juice, 355 

 Basal ganglia, 727 

 Batteries, 173, 532 

 Beat-tones, 846, 863 

 Beaumont on digestion, 300 

 Bell's experiments on nerve-roots, 697 

 Bert on double conduction in nerves, 602 

 on effects of oxygen at high pressure, 



257 



Benzoic acid, 390 



Bichromate cell, 173, 532 



Bidder's ganglia, 129 



Bile, 309-315, 381 



acids, 311, 312, 381 



formation of, 327 

 composition of, 310 

 curve of secretion of, 346 

 in emulsification of fats, 313 

 influence of nerves on secretion of, 



345 



mucm, 310, 381 



pigments, 310, 327, 381 



relation of, to spleen, 490 



reactions of, 381 



salts, decomposition of, 312 



secretory pressure of, 345 



spectrum of, 311 

 Bipolar ganglion cells, 664 

 Biuret reaction, 20, 378 

 Blastoderm, 867 

 Blind spot, 812, 861 

 Blood, coagulation of, 36, 58 



composition of, 45 



conductivity of, 34 



distribution of, 52 



functions of, 54 



gases of, 235 



in embryo, 871 



guaiacum test for, 64 



laking of, 35, 61 



opacity of, 35, 61 



quantity of, 51, 52 



Blood, quantity of, in lungs, 197 

 reaction of, 33, 34, 57 

 specific gravity of, 34, 57 

 stains, examination of, 66 

 sugar in, 402, 446, 451 

 velocity of, 105-115 

 in arteries, 1 14 

 in capillaries, 109, 118 

 in veins, 109, 122 



volume of corpuscles and plasma, 35 

 why it does not clot in the vessels, 44 

 Blood-corpuscles, 26 

 composition of, 46 

 crenation of, 27 

 enumeration of, 30, 61 

 life-history of, 31 

 Blood-plates, 29 



Blood-pressure, mean arterial, 102-105 

 curves, with elastic manometers, 100 

 with mercurial manometer, 102, 



185 



fall of, in sleep, 763 

 measurement of, 99, 185 

 effect of haemorrhage on, 165, 188 

 of extracts of nervous tissue on, 

 490 



pituitary body on, 489 

 suprarenal on, 488 

 thymus on, 490 

 thyroid on, 486 

 in capillaries, 119 

 in right and left ventricles, 82, 105 

 respiratory variations in, 249-256 

 Bloodvessels, structure of, 69 

 Blood-pump, 233 



Bohr, on tension of blood-gases, 240 

 Bones, composition of, 460 



effect of deficiency of lime salts on, 



473 



effect of various salts on, 474 

 Bone-faeces, 384 



Bone-marrow and blood-formation, 32 

 Brain, anaemia of, in sleep, 763 



circulation in, 766 



functions of, 726-765 



development of, 659 



in sleep, 761 



respiratory changes in volume of, 255 



size of, and intelligence, 765 

 Break-contraction, Tigerstedt's theory ot 



639 



Bronchi, 195 

 Bronchial breathing, 203 

 Brunner's glands, 315, 324 

 ' Buffy ' coat, 41 

 Burdach's column. See Postero-median 



column 

 Burdon-Sanderson on negative variation, 



632-634 



Caisson disease, 257 



Calcium, influence of, on coagulation, 42, 

 69 



salts and bone formation, 473 



in bone, 460 



Calorie, definition of, 493 

 Calorimeter, air, 495 



respiration, 498, 528 

 Calorimetry, 493 



