GENERAL IXDEX TO THE FIVE VOLUMES. 



491 



Haversian rods and canals of 



^bone, iii. 481 



Head-register of the voice, .iii. 509, 511 



Heart, anatomy of, i. 176 



capacity of different cavi- 

 ties of,.. i. 179 



valves of, i. 181 



movements of, .i. 183 



action of the auricles, i. 184 



action of the ventricles, . . . .i. 185 



locomotion of, i. 186 



twisting, hardening, short- 

 ening, and elongation of, . . . .i. 187 



impulse of, i. 191 



succession of movements of, 



i. 192 



force of, i. 197 



action of the valves, i. 199 



sounds of, i. 203 



cause of the sounds of, ... .i. 207 



relations of the sounds to 



the blood-currents, i. 210 



frequency of action of, . . . .i. 211 



influence of age and sex on 



the action of, i. 212 



influence of posture and mus- 

 cular exertion, i. 213 



influence of exercise, i. 215 



influence of sleep, i. 216 



influence of temperature,, .i. 216 



influence of respiration on 



the action of, i. 217 



cause of rhythmical contrac- 

 tions of, i. 220 



irritability of, i. 222 



pulsations of, after removal 



from the body, i. 223 



effect of ligature of the coro- 

 nary arteries on pulsations of,.i. 225 

 effect of emptying the cavi- 

 ties, i. 226 



influence of the nervous sys- 

 tem on, .*.i. 228 



influence of the pneumogas- 



trics on, i. 231 



effects of blows on the epi- 

 gastrium on, i. ' 238 



variations in the tempera- 

 ture in the two sides of, ... .iii. 401 

 influence of the spinal acces- 

 sory nerves upon, iv. 176 



direct influence of the pneu- 



mogastrics upon, iv. 225, 411 



influence of galvanization of 



the medulla oblongata upon,.iv. 411 



PAGE 



Heart, nerves in the substance 



of, iv. 422 



formation of the interven- 



tricular septum of, v. 432, 435 



development of, v. 435 



formation of the inter-auricu- 

 lar septum of, v. 435 



foramen ovale of, v. 435, 442 



relative size of, in the foetus, 



v. 436 



hypertrophy of, during preg- 

 nancy, v. 445 



Heat, animal, iii. 394 



limits of normal variations 



of, iii. 395 



variations of, with external 



temperature iii. 396 



variations of, in different 



parts of the body, iii. 398 



variations of, in the two sides 



of the heart, iii. 401 



variations of, at different pe- 

 riods of life, iii. 404 



diurnal variations of, ... .iii. 406 



influence of inanition upon, 



iii. 408 



influence of diet upon, . . .iii. 409 



influence of alcohol upon,.iii. 410 



influence of respiration upon, 



iii. 411 



influence of exercise upon,.iii. 412 



development of, observed in 



a detached muscle, artificially 



excited to contraction, iii. 414 



influence of mental exertion 



upon, iii. 415 



influence of the nervous sys- 

 tem upon, iii. 415 



variations in, due to reflex 



action, iii. 416 



influence of paralysis upon, 



iii. 417 



sources of, iii. 418 



seat of the production of,.iii. 420 



relations of, to nutrition, .iii. 422 



relations of, to the consump- 

 tion of nitrogenized matter and 

 the production of nitrogenized 

 excrementitious principles, . .iii. 423 

 relations of, to the consump- 

 tion of non-nitrogenized matter, 



iii. 424 



relations of, to respiration,. iii. 426 



consumption of oxygen and 



production of carbonic acid, in 



