540 



GENERAL BIOLOGY 



PAGE 



Progressive development 245 



Projection fibers 463 



Pronephric duct 206 



Pronephros 204 



Prophase 294 



ProstomiuiTL 163 



Proteins 83, 86 



ProthalHum 129, 138, 153 



Protoplasm, 57, 59, 88, loi, 151, 



218, 290, 299, 435 



Protozoa. . 68, 105, 221, 437, 441 



Psephenus lecontei 244 



Pseudo-navicellae 115 



Pseudopodia 71, 103, 438 



Psocid wings 230 



Psychic phenomena' 436 



Psychic states 434, 437 



Psyllidae 43 



Pteridophytes 128 



Pteris 129 



Pulmonary circulation ... 202 



Pupa 344, 347, 352, 362 



Pylorus 185 



Pyrenoids 62 



Quadrumana 485 



Quercus macrocarpa 45 



Race feeling 



Racial differentiation .... 



Racial improvement 



Radial symmetry 



Radiant energy 



Rag weed 



Rag weed seeds ......... 



Reaping machines 



Recapitulation 



Receptacle 



Receptors 436, 441 



Recessive characters 



Reflex arc 



Reflex response 



Refraction 



Regeneration 3 53. 3 56 



Regeneration in cells .... 



Regenerative cells 



Regressive development . 



Reindeer moss 



Relations between ants and 

 apliids 



286 

 320 

 328 

 288 



84 

 268 

 269 



257 

 265 



122 



.445 

 310 

 450 

 457 

 515 



.363 

 357 

 351 

 251 

 391 



47 



PAGE 



Reproduction .... 109, 289, 329 



Reproductive cells 122 



Reproductive methods ... 338 

 Reproductive organs . . 167, 188 



Resemblance 423 



Reserve potentialities .... 363 



Respiration aquatic 213 



Retrogression 283 



Robber fly 429 



Rhizoids 119, 120 



Rhizome 131, 136 



Rhus glabra 37 



Riccia 124 



Root ', . 130 



Root louse . ." 53 



Root tubercles 99 



Rotifers 339, 378 



Sacculina 397 



Salamander ..179,255,460,487 



Sandpiper 323 



Savages 497 



Scenodesmus 66 



Schultze 89 



Scion 360 



Scouring-rush 137 



Scroll gall 40 



Sea urchin egg 291,357 



Secondary circuits 454 



Secretin 443 



Secretions 59, 87, 443 



Seed 148, 151 



Seedlings 278 



Seed plants 142, 152 



Seers 509 



Segmentation cavity .... 170 



Segments 17,231 



Segregation 283,331 



Selaginella 138 



Selection 339 



Self pollination 10 



Senescence 329 



Sense organs 444 



Sepals 9 



Sepedon 408 



Septa 165, 171 



Sequences of activities ... 473 

 Serial homology ..225,230,234 



Seta 164 



Sex cells 167, 290 



