778 
STUDIES IN GENERAL PHYSIOLOGY 
CAMPANULARIA: heteromorphosis in, 629. 
CATALYTIC SUBSTANCES: importance in 
oxidation, 505. 
CATERPILLARS: heliotropism in, 20, 42, 
CELL-DIVISION: mechanics of, 389. 
CEREACTIS AURANTIACA: heteromorpho- 
sis in, 166. 
CEREBRATULUS MARGINATUS: 
physiology of, 356 ff. 
CERIANTHUS MEMBRANACEUS: secretion 
of, due to friction, 99; lack of hetero- 
morphosis in, 116; formation of ten- 
tactes of, 145; heteromorphosis in, 150; 
relation between form and irritability 
of, 152; life phenomena of, 159; impor- 
tance of turgor in, 162 ff; external con- 
ditions in formation of tubes of, 165. 
CH#TOPTERUS: artificial parthenogene- 
sis in, 540, 579, 646, 674, 770; specific 
effects of K ions on, 656. 
CHEMICAL STIMULI: 
Musca toward, 66. 
CHLOROPHYLL-BEARING PLANTS: influ- 
ence of light on movements of proto- 
plasm of, 6. 
CHROMATOPHORES: distribution in Fun- 
dulus, 300. 
CIONA INTESTINALIS: organization of, 
215; regeneration of nervous system of, 
217; threshold of stimulation of, 219. 
CLADocoRA: geotropism in, 201; hetero- 
morphosis in, 250. 
CLEAVAGE: general remarks, 253 ff.; 
lack of oxygen and, 373 ff; carbon di- 
oxide and, 393 ff.; pure oxygen and, 394. 
CLEPSINE: oxygen necessary for matu- 
ration of eggs of, 734. 
CoccINELLA: geotropism in, 85, 179. 
CocKROACH: geotropism in, 86, 182. 
COLOR PREFERENCE: anthropomorphic 
idea of, 16. 
COMPENSATORY MOVEMENTS: 
of inner ear on, 186. 
ConTACT-STIMULI: effect on orientation, 
193; effect on organization of, 214. 
CopErops: heliotropism of, 282; change 
of sense of heliotropism, 283 ff., 417. 
CryProps: stereotropism in, 110. 
CTENOLABRUS: influence of lack of oxy- 
gen on, 878 ff.; influence of carbon di- 
oxide on, 393 ff, 
CEERI CUCUMIS: geotropism in, 
brain 
orientation of 
influence 
CUMA RATHEII: heliotropism in, 73 ff. 
Cycuas: effect of hydrogen on heart-beat 
of, 417, 
DAPANIA PULEX: Bert’s anthropomor- 
phic idea of, 9; Lubbock’s idea of 
“preference” in, 10. 
DEPTH DISTRIBUTION AND MIGRATION: 
conditions determining, 289 ff. 
DEVELOPMENT OF ORGANS: influence of 
light on, 425 ff. 
DIVISIBILITY OF MATTER: orientation of 
particles, 117; limits of, 321 ff. 
DrosERA: reactions of, 286. 
Eartuworms: heliotropism in, 73, 77; 
brain physiology of, 357 ff. 
EcHINUS: segmentation not influenced 
by light, 427. 
ELECTRICAL WAVES: physiological ef- 
fects of, 482 ff. 
EMBRYONIC TISSUE: elfects of ions on, 
EPHEMERID#: geotropism in, 44. 
EUDENDRIUM RACEMOSUM: heliotropism 
in, 106; heteromorphosis in, 140, 172; 
influence of light on growth of, 428. 
EvUGLENA: influence of direction of rays 
on, 14; influence of refrangibility of 
rays on, 14; sensitive spot of, 77. 
Tages relation between irritability and, 
FERTILIZATION: nature of, 539, 620, 638, 
646; theory of, 683, 740. 
ae (LARVZ): heliotropism of, 20, 68, 
FORFICULA AURICULARIA: heliotropism 
of, 22; stereotropism of, 110, 158. 
FREEZING: effects of, 225. 
FRICTION: a cause of movement, 107, 110. 
Funpuuus: development of embryo of, 
295 ff. ; sensitiveness to lack of oxygen, 
309, 397; effects of lack of oxygen on 
cardiac activity of embryos, 404; in- 
fluence of light on embryos of, 434; 
effects of ions on, 550 ff.; partheno- 
genesis in, 682, 
Fusion: of cleavage cells through lack 
of oxygen, 383. 
GALVANOTROPISM: of Amblystoma, 440 
in theory of, 440 ff.; of Crustaceans, 
GAMMARUS LOcUSTA: heliotropism in, 73. 
GASTROSTYLA: divisibility of, 321. 
GEOMETRA PINIARIA: heliotropism in, 40. 
GEOTROPISM: in Porthesia chrysorrhcea, 
33; in Lepidoptera, 43; in Amphipyra, 
44; in Bombyx, 85; theory of, 102; in 
Hydroids, 174 ff.; in free-swimming 
animals, 178; in Asterina, 183; depend- 
ence on inner ear, 185; influence of, on 
axis of eyes, 186; in Antennularia an- 
tennina, 251; relation of, to heliotro- 
eae 285; in Loligo, 292; in star-fish, 
GONIONEMUS: effects of ions on 553, 559; 
parthenogenesis in, 682, 754. 
GONOTHYREA LOVENII: abnormality of 
erent in, 144; heteromorphosis in, 
GRAVITATION: relation to light, 95, 105; 
effects of, on Cerianthus, 107, 109, 154 
ff.; effect of, on orientation of body, 
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