INDEX 



347 



236*; comb, 236*, 238; gathering, 



236*, 256. 



Polychaeta, 190, 192. 

 Polyp, 5, 139. 

 Porifera, 5, 7, 149. 

 Porocyte, 146, 148. 

 Porospora gigantea, 80. 

 Portuguese Man-of-War, 142, 143*. 

 Posterior, 59. 

 Prairie dog, 30x5. 

 Preformation theory, 271-272. 

 Primates, 3. 

 Primitive streak, 216. 

 Proboscis, of Planaria, 153*, 154, 155. 

 Pronuba moth, 298. 

 Prophase, of mitosis, 3o*-3i. 

 Propolis, 256. 

 Prosopyles, 145, 151*, 152. 

 Prostomium, 165, 177*, 178. 

 Proteid, 21, 22, 170. 

 Prothorax, 236, 241*. 

 Protohippus, 292. 

 Protoplasm, chemical composition, 21- 



23; bridges of, 29, 97*; properties of, 



19-23 ; specificity of, 23 ; structure of, 



19-20*. 



Protopodite, 194*, 195, 197, 198, 199. 

 Protozoa, 5, 7, 29, 31, 66, 80-99, 100, 101, 



112, 113, 228. 

 Protozoaea, 230*, 231. 

 Proventriculus, 169. 

 Proximal, 117. 

 Pseudopodiospore, 52, 112. 

 Pseudopodium, 37*, 41, 80, 81, 124, 136, 



iSS- 



Ptyalin, 25. 

 Pulvillus, 237*. 

 Pupa, 252, 253*, 254. 

 Pyloric stomach, 195*, 200, 201. 

 Pyrenoid, 83*, 85, 93. 



Queen cell, 255. 



Queen honeybee, 233, 234*, 249, 254, 255. 



Races, of bees, 261. 

 Radial canals, 145*, 147*, 152. 

 Radial symmetry, 4, 5, 7, 159. 

 Radiating canals, of Paramecium, 63. 

 Rate: of regeneration, 190, 220-221; of 



respiration, 244. 

 Ray, John, 269-270. 

 Reactions, 16, 53-54 (see also Behavior), 



Recapitulation theory, 228-232. 



Receptor, 179. 



Rectum, 161, 241*. 



Redi, 8. 



Reduction, of chromosomes, 103*, 104*, 

 105*, 106, 107, 134. 



Reese, 117. 



Reflex, 178-179, 302-303. 



Regeneration: Crayfish, 2i9*-22o; 

 Earthworm, i89*-i9o; Grantia, 152; 

 Hydra, i37*-i39; Planaria, 157*. 



Remak, 35. 



Reproduction, 15-16; asexual, 15; 

 sexual, 15-16: Ameba, 50-53, 51*, 

 112; Ascaris, 161 ; Chlamydomonas, 

 92, 93; Crayfish, 209-211; Earth- 

 worm, 180-185; Eudorina, 96; Eu- 

 glena, 83*, 87; Grantia, 148-149; 

 Honeybee, 248-250; Hydra, 114, 

 118*, I33*~i37; Pandorina, 94, 95*, 

 96, 113; Paramecium, 67* 71, 69*, 

 112; Planaria, 156; Plasmodium, 89*, 

 90-91, 113; Spondylomorum, 94; 

 Volvox, 96*, 97*~99, 114. 



Reproductive organs, 159: Ascaris, 

 161*; Crayfish, 209, 210*, 211*; 

 Earthworm, 168, 180-185, 181*; 

 Honeybee, 248, 249*, 250; Hydra, 

 1 1 8*, 119; Planaria, 154*, 156. 



Reservoir, of Euglena, 83*, 84. 



Respiration, 14: Ameba, 50; Earthworm, 

 175; Grantia, 148; Paramecium, 64, 

 67. 



Respiratory system: Crayfish, 204; 

 Honeybee, 243^244* . 



Reticular theory of protoplasmic struc- 

 ture, 20*. 



Rheotropism, 54, 132. 



Rhizopoda, 80, 81, 82. 



Rhumbler, 48. 



Robin, 283-284, 294. 



Rocky Mountain sheep, 300. 



Ross, 88. 



Rostrum, 195*. 



Rotatoria, 5, 7. 



Round worm, 5, 160-163, 298. 



Royal jelly, 253. 



Ruthven, A. G., 295. 



Sacculina carcini, 299*-3OO. 

 Salivary glands, 241*, 242, 253. 

 Saltation, 281. 



