Subject Index 461 



Peranema, 126 

 Periclinal chimera, 285 

 ill apple. 351 

 in DdtuYd. 350. 356 

 diploid- 1 etraploid. 351 

 induced bv colchicine, 348 

 in Liliuni, 351 

 in Solan IH71, 351 

 Periclinal division, 350 

 Periosteum: see Bone 

 Petiolar swelling. 106 

 Petroselium, 42, 47 

 Peyer's patches, 178 

 Pharmacognosy of Colclticiun. 140-58 

 Pharmacology of colchicine, 175-201, 

 377, 380 ' 

 cellular, .396 



in forensic medicine, 176 

 Pharmacopeia. 1, 140 

 British. 141 

 Indian. 141 

 London. 13 

 of United States, 141 

 Pharmacy, 2, 3, 140 

 Pliase contrast microscope, 67, 77 

 Phenol. 401 



Phenvlhydrazine, 184, 185 

 Phenylurethane, 105, 392 



synergistic action, 105 

 Phieum. species of: nodosum. 323; 



pratense. 322-23 

 Phlorizin. 419 

 Phlox. 326 



drummoncUi. 364 

 Phosphorus, 89, 181 

 Photosynthesis, 397 

 Phragmoplasts, 73. 89 

 Phvtohormone. 101, 107, 275 

 Avena, 106 



colchicine not phytohormone, 107 

 elongation proportional to concen- 

 tration, 107 

 Hrli/iiitlius. 106 

 Lepidium hypocoiyl, 106 

 Pigeon, crop-sac of, 379 

 Pigs. 58-59, 381. 382 

 Pilocarpi!!, 181 

 Pi sum. 106 

 potency. 106 

 swelling, 107 

 Pisum satwum. action of colchicine and 



X-rays on. 267 

 Pituitar\, 177, 197: see also Hormones 

 -atlienal slinudation, 193 

 hormones. 226 

 mitosis in, 232 

 prolactin, 226 

 Planimetric measurements. 378 

 Plant anatomy, tunica-corpus concept, 



348 

 Plant tumors, 265 



Plasmodium, species of: rclirtum. 126: 



vivax, 126 

 Platelets, 176, 189 

 Plerome, 348 



Pleurodeles, deyelopment of, 203 

 1*1 inv the Elder. 2. 11 



Doctrine of .Signatures, 11 

 Ploidy, defined. 276 

 Plumide. 284 

 IMuricellidar animals, 375 

 Pluricentric mitoses. 203 

 Plurinucleation, 203 

 Podagra, 11, 12 

 Podophvllin. 264,413 

 Podophyllotoxin, 264, 413, 415 



effects of, 416 

 Podophyllum sp., 264 

 Poinsettia, 326 

 Poison. 34, 175, 178 



preprophase poison, 35 

 Polarization midoscope. 67. 71. 75. 76, 



77 

 Polarographic technicjue, 148 

 Pollen" 



cells, 74 



for counting chromosomes. 369 



grains. 33. 385 



mother cells, 369, 386 



sterility, 386 



tubes, 33, 37, 103 

 Polycythemia vera, 224, 259 

 Polxgoiiatum. 385 



c-pairs. 1 Ki 



distributeil c-mitosis, 347 



species of: commutatum, 37, 48: multi- 

 riorum, 326; pubescens, 108 



susceptible to colchicine. 116 

 Polyploid, classification of. 280-82 



intergiading series, 282-92 



limits not clearly defined, 292 

 Polyploids 



in Amoeba nucleus, 375 



artificial. 26 



cell volumes. 381 



cells, 93. 95 



colchicine not effecti\e in animal, 

 380 



definition of. 276 



induction of. in vertebrates, 206 



natural. 26 



plant tumor cells, 266 



principles of breeding, 285, 382 



raw. 321 



restitution nucleus in plants, 93, 399 



series of, 278 



species in nature, 279 



spermatogenesis, 205 



stabilization of, 285 

 Polyploids, animal, 380-83 



Amoeba. 58 



Anemia, 58 



