INDEX 



473 



Pure-bred, 370 

 Purpose, 177 

 Purposefulness, 178 

 Purposiveness, 178 

 Purse-sponge, 226 

 Puss-moth, 67 

 Pittorius ermineus, 394 

 Pyciiogonids, 114, 377 

 Pyrosoma, 270 

 Python, 285 



Queen-bee, 80 

 Queen- termite, 91 

 Quill of feather, 288 



Radial symmetry, 196, 232, 243 

 Radiolaria, 223 

 Radula, 261 

 Rational conduct, 173 

 Ratitse, 239 

 Rattlesnake, 59, 285 

 Reactions of unicellular organ- 

 isms, 159 

 Recapitulation, 316, 343, 346 



doctrine, 320-32 

 -in Crustaceans, 317 



Receptor, 140, 162, 372 

 Red coral of commerce, 231 

 Rediae, 234, 235 

 Reducing division, 307 

 Reduction of digits in pedigree 



of horse, 342 

 Reed, 149 

 Reef corals, 232 

 Reflex actions, 162 



arcs, 163 



Regeneration of lost parts, 69 

 Registration, 172, 184 

 Regulative secretions, 315 

 Rejuvenescence, 330, 332 

 Relative antiquity of types, 349, 



350 



Reophax, 174 

 Reproduction, 181 



- modes of, 298, 303 

 Reptiles, 280 



extinct, 281 



Resemblance to surroundings, 52 

 Respiration. 139, 151 

 Reticulum, 149 



Retrogression, 212 



Reversion, 365 



Rhea, 122, 289 



Rhinoderma danvini, 118, 119 



Rhizopods, 222 



Ribbon worms, 237 



Ribs, 292 



Rice-eel, 278 



Richter, 351 



Rigor mortis, 145 



Robertson, 66 



Rock-record, 346 



Romanes, 171, 424, 430 



Rooks, 126 



Rotifers, 45, 201, 242, 408 



Round worms, 238 



Round- mouths, 270 



Rousseau, 36, 99 



Roux, 72 



Rudimentary organs, 212 



Rumen, 149 



Ruminants, 149 



Rumination, 149 



Running -birds, 289 



Ruskin, 124, 284 



Russell, 187 



Saccophora, 66 

 Sacculina, 52, 212, 251 

 Sagitta, 242 

 Salamandra atra, 278 

 Salamander, black, 118 

 Salamanders, 278 

 Salmon, spawning of, 116 

 Salpa, 270 

 Saiiba ants, 85, 86 

 Savigny, 207 

 Scales, 280 

 Scapula, 292 

 Scarabee, 127 

 Schleiden, 198 

 Schmankewitsch, 390 

 Schwann, 198 

 Scorpions, 37, 258 

 Scyphomedusae, 229 

 Sea-anemone, behaviour of, 164 

 Sea-anemones, 73, 226, 228 

 Sea-butterflies, 259 

 Sea-cows, 293 

 Sea-fans, 228 



