INDEX. 



643 



force of the heart, 350 ; on the pres- 

 sure of the blood in arteries, 357 ; 

 on the velocity of the blood in 

 arteries, 357 ; and Poiseuille, on the 

 force of the current in the veins, 

 377 



Hamberger, on the movements of in- 

 tercostal muscles, ii. 400 



Hamulus, ii. 75 



Hancock, on muscular fibres, of pros- 

 tate, ii. 541, of urethra, 543 



Hand, i. 149 



Hare-lip, ii. 598 



Harless, on the presence of uric acid 

 in the renal organs of the cephalo- 

 poda, ii. 483 ; on the diameter of the 

 blood corpuscles in arterial and 

 venous blood, 411 



Harvey, on the discovery of the cir- 

 culation, ii. 315 ; on the quantity of 

 blood, 292 



Hassenfratz, on carbonic acid in the 

 blood, ii, 412 



Hastings, Sir Charles, on the irritabi- 

 lity of arteries, ii. 355 



Havers, glands of, ii. 452 



Haversian canals of bone, i. 107 



Headache, i. 368 



Hearing, difference of in different 

 persons, ii. 99; organ of, general 

 description, 63, development of, 

 in animal series, 63 ; phenomena 

 of, 88 ; development of organs of, 

 600, 601 



Heart, ii. 331 ; arrangement of fibres in, 

 i. 164; contractions of, 193; of 

 Crustacea, ii. 331 ; development of, 

 589, 602 ; of birds, 332 ; of fishes, 

 332 ; force of, 357 ; of mollusca, 

 331 ; muscular tissue of, 339 ; 

 nerves of, 341 ; nutrition of, 341 ; 

 of reptiles, 332 ; influenced by 

 spinal cord, i. 340 ; sounds of, ii. 

 344 



Heart's action, ii. 343 ; frequency of, 

 346 ; influence of the period of the 

 day, posture of the body, etc., 

 upon, 346 



Heat, amount of, developed, in or- 

 ganism, ii. 419 ; animal, influenced 

 by exercise, 420 ; development of, 

 in animals, ii. 418 ; in plants, 417 ; 

 developed when carbon combines 

 with oxygen, 417 ; loss of, by eva- 

 poration, 422 ; period of, in animals, 

 563 ; and cold, sensations of, i. 432 



Heberden, on frequency of the heart's 

 action, ii. 346 



Hectocotylus, ii. 533 



Heintz, on urate of soda in urine, ii. 



501 



Helicotrema, ii. 76 

 Helix, ii. 66 ; groove, 67 

 Hemiplegia, paralysis of tongue in, 



ii. 109 ; accompanying lesion of cor- 

 pora striata, i. 348 

 Hemispheres, cerebral, i. 279 

 Henle, on epithelium of arteries, ii. 



320 ; on change of form in the red 



blood corpuscles, 411 ; on lacteal 



ducts, 627 ; on movements of sper- 

 matozoa, 547 ; and Kolliker on 



Pacinian corpuscles, i. 400 

 Hepatic duct, ii. 251 ; vein, 472 

 Herbivora, Brunner's glands in, ii. 



231 ; Peyer's patches in, 234 ; 



sources of carbonic acid in, ii. 415 

 Herbst, on the capacity of the lungs, 



ii. 404 



Hermaphrodite, ii. 531 

 Herschell, on achromatism of the eye, 



ii. 50 ; on intensity of sound, ii. 



88 

 Hewson, on coagulation of the blood, 



ii. 293 

 Hiatus Fallopii, Vidian nerve in, ii. 



106 



Hippocampus major, i. 290 

 Hippuric acid, ii. 501 ; in urine, 498 

 Hirudines, reproduction of, ii. 532 

 Hissing of serpents, ii. 432 

 Holding the breath, effects of, ii. 403 

 Home, Sir E., on membrana tympani, 



ii.68 



Hoofs, i. 41 6 

 Hoop, production of in hooping-cough, 



ii. 444 



Hooping-cough, nature of, ii. 125 

 Hope, Dr., on cause of second sound 



of heart, ii. 334 

 Horn, on taste, i. 448 

 Horse, kidney of, ii. 448 

 Houston, Mr., on the folds of the 



rectum, ii. 226 

 Houston, Dr., on the circulation in an 



anencephalic foetus, ii. 372 

 Hubert, on the temperature of plants, 



ii.418 

 Human embryo, development of, ii. 



590 ; heart, 332 

 Humboldt, Baron Von, his case of 



suckling by the male parent, ii. 



628 

 Hunefield's experiments on the action 



of the bile, ii. 259 

 Hunger, ii. 159 

 Hunter, John, on the contractility of 



arteries, ii. 321, 355 ; on the changes 



