734 



INDEX 



Living substance, 15; see also Protoplasm. 



behavior of, in metabolism, 135, 137. 



constitution of, 20. 



form of, 15. 



impetus to formation of, 63, 64, note. 

 Load, effect of, on performance of muscle, 435, 



446, 449. 



Lobule, paracentral, 638, 639, Fig. 290; 652. 

 Localization, in retina, 518. 



in skin, 463. 



of temperature sense, 464. 



power of, affected by different conditions, 



464. 



Local sign, 463. 



Locomotor movements, control of, by spinal 

 cord, 586. 



in decapitated animals, 587. 

 Lophius piscatorius, 572. 

 Loudness of sound, 489. 

 Ludwig's air pump, 334, Fig. 130. 

 Lumbar nerves, innervation of urinary bladder 



by, 392, Fig. 145. 

 Lung catheter, 341, Fig. 133. 

 Lungs, see Respiration and Respiratory move- 

 ments. 



circulation in, 227. 



elasticity of, 310. 



exchange of air in, 319. 



means of protection for, 323, 330. 



noxious air space in, 320. 



vasomotor nerves of, 233, 235. 



vital capacity of, 320. 

 Lutein, 695. 

 Lutein cells, 695. 

 Lymph, chemical properties of, 347. 



composition of, 348. 



definition of, 347. 



formation of, 349. 



filtration theory, 349, 350. 

 secretion theory, 350. 



gases in, 348. 



medium for tissue cells, 30. 



movements of, 348. 



quantity of, formed in 24 hrs., 348. 

 Lymph glands, 352. 

 Lymph hearts of amphibia, 349. 

 Lymph vessels, contractions of, 349. 



valves of, 349. 

 Lymphocytes, 153. 

 Lymphogogic substances, 352. 

 Lymph-producing substances, 350, 351. 

 Lysin, 70, 72, 249. 



Maculse acusticse, 475. 



Magendie's doctrine, 565. 



Magnesium, absorption and excretion of, 133. 



in bones, 26. 



Magnesium salts, effect of, on ciliary move- 

 ments, 25. 



Magnesium salts, importance of, in plants, 24. 



M alapterurus , 50. 



Male sexual organs, 691. 



Malic acid, 54. 



Malleus of middle ear, 494, Fig. 196; 495. 



articulation of, with incus, 496, Fig. 198. 

 Malonic acid, 377. 

 Malpighian corpuscle, 386. 

 Malt sugar, 81 ; see also Maltose. 

 Maltase, 246, 251. 

 Maltose, 81. 



action of reversible enzyme on, 39. 

 Mammary glands, 703. 



fat in, 705. 



innervation of, 704. 



morphological changes in, 704. 

 Mannite, 80. 

 Mannose, 80. 

 Manometer, elastic, 9, Fig. 5. 



in determination of blood pressure, 202. 



mercury, 8, Fig. 3. 

 Marginal gyrus, 634. 



Mariotte's experiment, 515, 516, Fig. 212. 

 Marrow, red, of bones, 150. 

 Marsh gas, 295. 

 Mastication, 278. 

 Maturity, period of, 706. 



sexual, 692, 696. 

 Maxwell's disks, 542. 

 Meals, 83. 



Meat as article of food, 145; see also Proteid. 

 Mechanical stimulation, 56. 



of cortex, 633. 



of nerves, 418. 

 Medulla oblongata, or bulb, 600, 602. 



cardiac centers in, 195. 



functions controlled by, 604. 



importance of, 604. 



nuclei of cranial nerves in, 603, Fig. 269. 



respiratory center in, 325. 



transverse section of, 602, Fig. 268. 



various centers in, 602, 603, Fig. 269. 



vasomotor centers in, 238. 



vomiting center in, 286. 

 Meissner's plexus, 288, 687. 

 Membrane, animal, osmotic properties of, 32, 

 352. 



basilar, of organ of Corti, 499, 500, Fig. 199. 



of cells in general, 16. 



of plant cells, 21, Fig. 16. 



semipermeable, 31. 

 Memory, seat of, 671. 



Memory pictures, 660, 663, 665, 669, 671. 

 Menstruation, cause of, 697. 



cosmic phenomena and, 62. 



description of, 696. 



physiological significance of, 697. 

 Mental work, influence of, on fatigue, 446, 676. 

 Mesencephalon, 600, 613. 



