ago 



SUBJECT INDEX 



Aristotle's lantern, 9, 14, 30; Figs. 2, 7; 

 in locomotion, 46 



Artificial parthenogenesis, see Partheno- 

 genesis 



Aster, 95, 96; spiral, 152; not formed in 

 Oa-lack, 197 



Asterias, maturation of egg, 53; blebs on 

 immature egg, 73 



Asteroidea, 14 



Asynchrony in cleavage, 104-105 



Atropine, cleavage, 162; phosphorus metab- 

 olism, 207 



Azide, sodium, on cleavage, 162; on cyto- 

 chrome oxidase, 171 



Barbiturates, see Anaesthetics, 153, 162, 



186 

 Bermuda, fossils, 21; food, 24 

 Bile salts, on cleavage, 162; cytolysis, 171; 



parthenogenesis, 200 

 Blastocoel, 109; pH, 186 

 Blastomeres separated with age, 149 

 Blastula, 109; Plates III, V 

 Blebs (papillae) on immature egg with 



sperm, 73; Plate II, 16, 17 

 Blood, see Perivisceral fluid 

 Body fluid, see Perivisceral fluid 

 Bothriocidaris, 20 

 Breaking of egg with centrifugal force, see 



Egg fractions 

 Breeding season, at Woods Hole, 52-56; at 



Beaufort, N.C., 54 

 Brood pouches, 52; Fig. 8 

 Burrowing sea urchins, 38, 39 

 Buttonfish, 5 



Caffeine, on stratification and breaking, 

 133; permeability, 204; on respiration 

 and cleavage, 216 



Calcium, see Compilation, 155-157; in 

 shell, 221 



Calcium-free sea water; see Compilation 

 under Calcium, 156; Table 16; no papil- 

 lae on oocyte, 73; fertilization prevented, 

 91, 181; on sperm, 91; on hyaline layer, 

 155, 183; on viscosity, 156; on cleavage, 

 161 



Capacity, electrical, 175 



Carbohydrate and carbohydrate metab- 

 olism, see Compilation, 157-158; see also 

 sugar; in late eggs, 149; in eggs, 166 



Carbon dioxide, attracts sperm, 93; cleav- 

 age, 162; respiration, 216, 217; rhythms, 

 217, 219; sperm, 218; viscosity, 225 



Carbon monoxide, cleavage, 163; on cyto- 

 chrome oxidase, 171, 216; respiration, 

 216 



Carcinogens (dibenzanthrene), cleavage, 

 163; cytolysis, 171; permeability, 204 



Cations, permeability, 204; toxicity, 209; 

 see also individual salts 



Centrechinus, and Diadema, 17 footnote; 

 albino, 30; classification, 63; see Diadema 



Centrifuged eggs, 121-146; Fig. 12; Plate 

 VII; stain, 125, 126, Table 8; other eggs, 

 127; development, 138-139, Plate VIII; 

 centrifuged after fertilization, 133-134, 

 144; Plate XII, 14-17 



Centrifuged egg fractions, development, 

 138-145; conclusions, 145-146 



Centrifuging, methods, 121-122 



Centriole, 101 



Centrostephanus lo7jgispinus, color change, 

 29; phototaxis, 43; classification, 63 



Cesium, and potassium, 209 



Chalk eggs, 4, 20 



Challenger expedition, 52 



Chemotaxis of sperm, 92 



Chlorine, taken up by jelly, 188; parthe- 

 nogenesis, 200 



Chroraatophores, see Compilation, 158- 

 160; see also Echinochrome (pigment 

 granules); in skin, 29; in plutei, 111, 158 



Chromosomes, sperm, 88, 103; egg, 96; 

 cleavage, 102; number and size, 102; sex 

 chromosomes, 88, 102; parthenogenetic 

 egg, 102; in other Echinoidea, 102 



Cidaris, sex dimorphism, 48; brood pouch, 

 52; Cidaris abyssicola, 60; classification, 

 63; egg size, 63; chromosomes, 102; see 

 Compilation for Other Species 



Cilia quieted, anaesthetics, 152; KCN, 169; 

 MgSOi, 191; methocel, 191 



Cinchonidine, stain, 125, 158 



Cinchonine, stain, 125, 158 



Citrate (sodium), for chromatophores, 159 



Classification, history of, 14, 15; of Echi- 

 noidea, 62-67 



Clavacin (antil)iotic), cleavage, 163 



Clear layer, see Compilation, 160; imma- 

 ture egg, 74; mature egg, 125; stain, 126; 

 Table 8; in white half, 126, 129; in red 

 half, 126; Fig. 12; Plate VII; other eggs, 

 127 



Clear quarter-egg, 129, 130, 142-143; Fig. 

 12; Plates VII, XII; Table 9 



Cleavage, acceleration, see Compilation, 

 161-162; cleavage, delay or arrest, see 

 Compilation, 162-166; history, 17; de- 

 scription, 96-100; time schedule, 97; 

 Tables 2-5; Plates III-V; without mem- 

 branes, 100; Plate XVI, 7, 9; in centri- 

 fuged eggs, 138-139; Plate VIII; with 

 oxygen-lack, 161, 164, 197; with pres- 

 sure, 165, 210-211; see Respiration 



Cleavage furrow, 96; pressure, 155, 158, 

 210 



Cleavage plane and sperm entry, 100 



