INDEX. 



1171 



Hermann on muscle currents, 101 



Hiccough, 511 



Hippuric acid, its presence in urine, 517; 

 how formed in the kidney, 539 



Hopping, how effected, 1105 



Horopter, the, 957 



Horse, sweat of, 551 



Humour, aqueous, 972; how furnished, 

 972 ; vitreous, 974 



Hunger and thirst, sensations of, 1048 



Hiirthle, membrane manometer of, 194- 

 196 ; tracings of ventricular and aortic 

 pressure by apparatus of, 203, 204, 208, 

 209, 233 ; differential manometer of, 

 205 ; tambour sphygmoscope of, 220 



Hydrochloric acid, free, in gastric juice, 

 322 



Hydrogen, evolution of, in small intes- 

 tine, 395 



Hyperpnoea, 485 



Hypoxanthin, presence of, in urine, 517 



Illusions, visual, 961 ; tactile, 1069 



Images, retinal, formation of, 839-845; 

 in relation to sensations excited by, 

 845 ; entoptical, 876 



Impulses, nervous, 54, 106; electrical 

 changes accompanying, 107; cardiac, 

 209 ; mode of recording, 213 ; afferent 

 and efferent, 676; their paths along 

 the cord, 800, 801, 810; relays in course 

 of, 802, 810; crossing of, 804; sensory, 

 different paths for different, 805 ; trans- 

 mitted by grey matter and internuncial 

 tracts, 808 ; ampullar, 732 ; motor, effect 

 of efferent impulses on the coordina- 

 tion of, 733, 955; visual, 781, 834, 908; 

 auditory, how excited, 980, 983 ; audi- 

 tory, development of, 980, 986; voli- 

 tional, time required for transmission, 

 774 ; volitional, course of, in man along 

 the pyramidal tract, 775 



Impurities in expired air, 442 



Income and output of material in nutri- 

 tion, 622 



Incus, the, 986 



Indol, a product of bacterial action, 361, 

 393 



Induction coil, construction of, 59 



Infancy, characteristics of,.1148 



Inflammation, phenomena of, 290 ; oedema 

 due to, 410 



Infusoria, ciliary motions in, 136 



Inhibition, cardiac, phenomena of, 245 

 et supra : fainting a result of, 253, 

 302; effect of atropin on, 257 



of secretion of saliva, 335 ; of respi- 

 ration, 479; of reflex actions, 7Q7; of 

 parturition, 1142 



Inhibitory nerves, 148; fibres in vagus 

 of frog, 248; in vagus of mammal, 

 250 ; cardiac inhibitory fibres, contin- 



uous action of, 253 ; their analogy with 

 vaso-dilator fibres, 269 



Inspiration, mechanism of, 433; move- 

 ments of, 434; laboured, phenomena 

 of, 436 



Intercostal muscles, their work in respi- 

 ration, 435 



Intermediate line, in muscle fibre, 85 



Intermittence, cardiac, 260, 301 



Interruptor, magnetic, 63 



Intestine, absorption of fats in the, 417 ; 

 absorption of diffusible substances and 

 water, 420 



, large, movements of, 381 ; changes 



of food in, 395; digestion of cellulose 

 in the, 396 



, small, movements of, 380; changes 



of food in the, 390, 391 ; fermentative 

 changes of food in the, 394 ; fluidity of 

 food maintained in the, 422 



" Intrinsic light " of retina, 904 



Iodine, coloration of starch by, 316 



Iris, development of the, 837; muscular 

 and vascular changes in the, 857 



Iron, its presence in hsematin, 460; in 

 haemoglobin, 450; in bile, 355, 585; in 

 the spleen, 582 



Irradiation, 932 



Irritability, muscular and nervous, 53-80 ; 

 their mutual independence, 53, 54; 

 diminution and disappearance of, after 

 death, 80, 81; as affected by electro- 

 tonus, 112 ; circumstances determining, 

 125; centrifugal loss of, in severed 

 nerve, 126; influence of temperature 

 on, 127; influence of blood-supply on, 

 128 ; influence of functional activity on, 

 ib. ," presence of oxygen a condition of, 

 130 ; prolonged, of heart, 242 



Irritants, inflammatory action of on 

 tissues, 291 



Islets, extra-vascular, 149 



Jaundice, how caused, 370, 587 

 Judgments of distance and size, how 



formed, 965; of solidity, 966 

 Juice, gastric, see Gastric juice 



, pancreatic, see Pancreatic juice 



, intestinal, see Succus entericus 



Jumping, how effected, 1105 



Katabolic changes in living tissue, 39, 41 ; 



heat liberated by, 638 

 Katelectronus defined, 113 

 Kathode or negative electrode, 57 

 Key, galvanic, various forms of, 58 

 Kidney, the, duplexity of its mechanism, 

 524 ; vaso-motor mechanisms of, 525 ; 

 relations, various, of flow of blood 

 through, 528; vaso-constrictor nerves 

 of, 530; effect of chemical changes iu 

 the blood, 531 ; secretion by the renal 



