INDEX 



4Sf> 



Parthenogenesis, 215; artificial, 283; 



variation in animals produced 



by, 155. 

 Pasteur, 13. 



Pattern, in animals, 398. 

 Pearson, Karl, 185. 

 Pelecanus erythrorhynchus (illus.), 



20. 

 Pelican, brown (illus.), 329; white 



(illus.), 20. 

 Peneus potimirium, development of 



(illus.), 232. 

 Peronea cristana, variation in wing 



pattern of (illus.), 148. 

 Pctromyzon fluviatilis, fertilization 



of (illus.), 219. 



Phaneus mexicanus (illus.), 72. 

 Pheasant, Argus, male and female 



(illus.), 75. 

 Phlegethontius Carolina, larva of 



(illus.), 418. 

 Phrynosoma blainevillei, pineal eye 



of (illus.), 176. 

 Phyla, of animals, 33. 

 Phyllium (illus.), 413. 

 Phyllopteryx (illus.), 415. 

 Physalia, commensal life with No- 



meus (illus.), 372. 



Physiological units of Spencer, 250. 

 Piddock (illus.), 39. 

 Pigeons, races of (illus.), 87. 

 Pimpla conquisitor, laying eggs in 



cocoon (illus.), 359. 

 Pipa americana (illus.), 43. 

 Pipefish (illus.), 415. 

 Pithecanthropus erectus, 462; remains 



of (illus.), 463; (illus.), 464. 

 Planaria lugubris, regeneration of 



(illus.), 285; (illus.), 286. 

 Plants, living symbiotically with 



animals, 376; number of, 16; 



parasitic, 362. 

 Plate, L., 77. 

 Plateau, 424. 

 Plum and its parent (illus.), 93; 



plumcot, types of (illus.), 92; 



seedlings from (illus.), 92. 

 32 



Plums, Burbank's work with, 92. 



Podocoryne carnea (illus.), 373. 



Polar bodies (illus.), 270. 



Polyp, fresh water (illus.), 35. 



Polyps, commensal life with her- 

 mit crab (illus.), 373; (illus.), 

 374. 



Poppies, Burbank's work with (il- 

 lus.), 99. 



Potato, Burbank, 91, 92. 



Poulton, E. B., 408, 419, 423, 424. 



Prawn (illus.), 365; stages in de- 

 velopment of (illus.), 232. 



Preformation, 276; theory, 249. 



Prenatal influences, 167. 



Pressure of atmosphere in relation to 

 animal life, 40. 



Primates, 454; classification of, 455. 



Primroses, evening, de Vries' work 

 on, 157. 



Prophase, defined, 254. 



Protista, 32. 



Protophyta, 32. 



Protoplasm, chemistry of, 27; phys- 

 ical structure of, 28, 247. 



Protozoa, 32; parasitic, 354; re- 

 production of colonial, 216. 



Pterophryne histrio (illus.), 410. 



Pterichthyodes milleri (illus.), 305. 



Pygosteus, 207. 



Pyrus japonica, seedlings of (illus.), 

 95. 



Quadrumana, 458. 

 Quail, California (illus.), 15. 

 Quetelet, 140, 141. 

 Quince, Japanese, seedlings of (il- 

 lus.), 95. 



Radl, E., 428. 



Raja binoculata, egg case of (illus.), 



337. 



Rambur, 13, 14. 

 Rat, kangaroo (illus.), 13. 

 Rattlesnake, diamond (illus.), 16. 

 Realm, arctic, 318; Australian, 322; 



holarctic, 319; lemurian, 322. 



