INDEX 



ABSORPTION from alimentary canal, 129 

 Accelerator nerves of heart, 237 

 Accommodation of the eye for distance, 



391 



for light, 390 

 Acromegaly, 93 

 Addison's disease, 91 

 Adrenalin, action on the kidney, 209 

 formed in suprarenal capsule, 92 

 Air, quantity inspired, 173 



quantity needed by individual, 191 

 Air-cells of lungs, 168 

 Albumin made by plants, 12 

 Alcohol, effect on nerve conduction, 301 

 Alimentary canal, morphology of, 98 



nerves of, 104 

 Altitude, highest, attained by climbers, 



187 



Alveoli of lungs, their number, 169 

 Amides produced from proteins, 119 

 Amoeba, irritability of its protoplasm, 



10 

 Amyl nitrite, effect on vascular 



system, 237 



Anaemia, treatment with iron, 67 

 Anaesthetics, influence on protoplasm, 



11 



Analysis by animals, 12 

 Angina pectoris, 237 

 Angler fish, its nerve- cells, 31 

 Animal machine and its driver, 354, 358 

 Animals, hunting versus hunted, 366 

 not reflex machines, 358 

 relative insensibility to the knife, 



361 

 Antitoxins, formation by protoplasm, 



20 



Aorta, diameter of, 232 

 Aphasia, 352 



Apncea, condition of arrested respira- 

 tion, 181 

 Appendicitis, increased frequency of, 



101 



Appetite, a safe guide, 114 

 Arteries, blood -pressure in, 234, 239 



structure of wall of, 233 

 Artificial respiration, 183 

 Asphyxia, 182 

 Association zones in the cortex of the 



great brain, 348 

 Asthma, due to reflex contraction of 



small bronchi, 167 



Astigmatism, correction by glasses, 393 

 due to modern print, 269 



Attention, effect of, iu heightening pain, 

 361 



Bacteria, diminution of number in 

 intestine on milk diet, 138 



of alimentary canal, 135 



of Bulgarian sour milk, 138 



of the River Ganges, 141 



in an infant's intestine, 136 



their role in nature, 20 

 Balance-sheet of body, how drawn up, 



149 



Balloon, highest altitude attained in, 187 

 Basket-cells in nervous system, 324, 340 

 Bat's squeak, number of vibrations, 418 

 Bats, flight not dependent on vision, 



381 



Beats in music, explanation of, 407 

 Beetle, muscle of, 261 

 Belladonna, physiological action, 109 

 Bile, composition, 117 



function in regard to absorption 

 of fat, 133 



relation to digestion, 117 

 Bile-pigment, origin from haemoglobin, 



69, 82, 118 

 Bioplasm, the essential substance of a 



living cell, 148 



Birds, sense of hearing of, 410 

 Blind spot, how filled in, 395 

 Blisters, 41 

 Blood, amount ejected by heart, 219 



circulation -time, 219 



composition of, 59 



gases of, amount, 190 

 tension, 61 



lodged in abdominal veins, 234, 236 

 Blood-corpuscles, cellular nature, 28 



life-story, 62 



number, 61 



origin, 63, 64 



structure, 60 

 Blood-platelets, 74 

 Blood-poisoning, 57 

 Blushing, 243 

 Bowman's description of kidney, 200 



discs in muscle, 259 

 Brain. Cf. Cerebellum, Cortex of 

 cerebrum 



blood-supply of, 352 

 Bread, digestion of, 120 

 Breathing, mechanism of, 171 

 Bruises, explanation of play of colours, 69 

 Bulgarian milk-germ, 138 

 441 



