780 



STUDIES IN GENEEAL PHYSIOLOGY 



JUNE-BUG LARV^: : heliotropism of, 20, 71. 



LACK OF OXYGEN : influence of, on fish 

 embryos, 309 ff. ; and Perca fluviatilis, 

 320; physiological effects of, 370 ff. ; 

 and Copepods, 373; and Ctenolabrus 

 eggs, 374; influence of, on Fundulus 

 eggs, 375, 397 ; and segmentation of egg, 

 400 ft'. ; and cardiac activity of fish em- 

 bryos 404; and t'yclas larvse, 417 ; and 

 heliotropism, 417; and pigment cells, 

 420. 



LEECHES: heliotropism in, 73: oral end 

 more sensitive to light, 78; stereotro- 

 pism in, 79; lack of regeneration in, 341 

 ft'.; brain physiology of, 361. 



LEPIDOPTERA: heliotropism in, 7, 37, 40, 

 51. 56, 61, 74, 86; chemotropism in, 112. 



LEUCOCYTES: migration of, due to 

 stereotropism, 111. 



LIGHT : effect of direction of ray on 

 movements, 2, 4, 5, 16, S3, 91, 108, 265; 

 effective rays of , 3, 5 ; effect of change 

 in intensity of, 3,82,276; effect of, on 

 swarm-spores of algw, 5 ; effect of, on 

 Lepidoptera, 7; effect of, on Protozoa, 

 7; mechanical effects of, 7; effect of, 

 on water fleas, 8 ; effect of, on Daphuia, 

 9; influencing "instinctive" move- 

 ments, 107, 109; effect of, on develop- 

 ment of organs, 42") ff. ; effect of, on 

 Fundulus embryos, 434 ff. 



LIMULUS POLYPHEMUS: heliotropism in, 

 267. 288; locomotion dependent on 

 sense of heliotropism of, 284. 



LOLIGO: heliotropism in, 291; geotro- 

 pism in, 292. 



Loss OF WATER: effect of, on cleavage, 

 253: influence of, on embryos, 309, 314. 



LUMBRICUS FCETIDUS: brain physiology 



of, 359. 

 LYMNJEUS STAGNALIS: growth in, 229. 



MACH^ERITES: blindness of, as related 



to sex, 56. 

 MARGELIS: heteromorphosis in, 628 ff . 



MATURATION: of unfertilized eggs of 

 star-fish, 728 ff. 



MEDUSA: periodic migration of, 366; ion- 



prpteids in, 544; locomotion of, 553; 



effects of Ca ions on, 753. 

 MELOLONTHA VULGARIS: heliotropism 



in, 71. 



MESOCARPUS: influence of light on, 6. 

 METAMORPHOSIS : influence of central 



nervous system on, 436. 

 MICELLA: conceptions of, 334. 



MIGRATIONS OF ANIMALS: influence of 

 geotropism on, 180; physiological con- 

 ditions determining, 289 ff. 



MOTHS: heliotropism in, 7, 38. 



MULTIPLE EMBRYOS : development of, 303. 



MUSCA VOMITORIA: helitropism in, 56, 

 113; stereotropism in, 64,68; effect of 

 heat on orientation of, 65; relation of 

 orientation of, to chemical stimuli, 66: 

 movements due to sum of stimuli, 112. 



MUSCLE: absorption of water by, 510 ff. ; 

 rhythmical contractions of, 518 ff. ; 

 contact-irritability of, 692ft'.: produc- 

 tion and suppression of twitchings of, 

 by electrolytes, 748 ff. 



MYSID^E : stereotropism in, 110. 



NEMERTINES : brain physiology of, 356 ff. 



NEREIS: brain physiology of , 358 ; artifi- 

 cial parthenogenesis in, 772. 



NERVE: regeneration of, 217, 252; effects 

 of fluorides on, 703 ff. 



NUCLEUS : effect of, on growth. 321 ff. ; 

 the organ of oxidation, 508. 



OCELLA : formation of, in Ciona, 216. 



(EDEMA : influence of osmotic pressure 

 on, 471 ; increase in osmotic pressure of 

 muscle causing, 515. 



ORAL PLATES: in Cerianthus, 159, 160. 



ORBITOLITES : changes of enucleated 

 pieces of, 506, 507. 



ORGANIZATION : dependent on orienta- 

 tion, 191, 192; relationship of, to 

 growth, 191, 251; internal causes of, 

 205; Sach's theory of, 207,211,212,215; 

 Loeb's theory of, 208 ; relationship of, 

 to irritability, 213; in Ciona, 215; em- 

 bryonal, 319. 



ORIENTATION : influence of direction of 

 rays on, 2, 4, 5, 16, 53, 91, 108, 265; influ- 

 ence of temperature, 3; influence of in- 

 tensity of light on, 3, 4, 32; influence of 

 physical laws on, 51 ; influence of form 

 of body on, 75; of plants, 109; com- 

 position of forces in, 112; forms of irri- 

 tability influencing, 174, 251; influence 

 of gravitation on, 176, 177, 178; governs 

 regeneration and heteromorphosis, 

 193. 



ORTHOTROPISM: of organs, 2; in dorsi- 

 ventral animals, 97. 



OSMOTIC PRESSURE: relation of, to 

 growth, 228, 240; in bursting of egg- 

 membrane, 306; relation of, to absorp- 

 tion by muscle, 166; in parthenogenesis, 

 640, 648 ff. 



OTOLITHS: relation of, to geotropism, 



187, 189. 



OXYGEN (see Lack of Oxygen): role of, 

 in heliotropism, 15: relation of, to re- 

 generation, 240, 252; Hoppe-Seyler's 

 theory of action of, 371 ; relation of, to 

 cleavage, 394; relation of, to growth, 

 400. 



PANTOPODS: regeneration of, 338. 

 PAPILIO MACHAON: heliotropism in, 42. 



PARTHENOGENESIS : artificial, 539 ff., 

 638 ff. ; in Arbacia, 576 ff., 624 ff. ; in 

 Annelids (Chsetopterus), 646 ff . ; in 

 Fundulus, 682; in Gonionemus, 682; 

 in Podarke, 682; in Phascolosoma, 

 682,772; in Crustaceans, 684; sources of 

 error in, 765 ff. 



PERCA FLUVIATILIS : effect of lack of 

 oxygen on, 320. 



