886 Index 



Photosynthesis, 105, 112, 130, 150-166, 

 168, 169, 186, 210, 211, 359, 

 360, 363 



Phototropism, 243, 347,* 348, 359 



Phycocyanin, 114, 118, 151-154 



Phycoerythrin, 118 



Phycomycete (algalike fungi), 109, 

 124,* 125, 167, 173-175, 174* 



Phylogeny, 442, 742 



Physiology, 24 {see also specific organ- 

 isms) 



Phytogeography, 591 



Phytomastigina, 274 



Phytopathology, 850 



Pia mater, 503 



Pieris (calabage butterfly), 413* 



Pigeon {see Birds; Aves) 



Pigment, 153, 156,* 243-247, 421, 732 



anthocyanin, 206, 208, 245, 246 



carotene (carotin), 115, 153, 155, 



159, 208, 228, 229, 244, 245 



chlorophyll {see Chlorophyll) 



chromatophores, 758, 759 



erythrophore, 758, 759 



flavone (flavonon), 245, 246 



fucoxanthin, 116, 153, 160, 161, 244 



guanophore, 758, 759 



melanin (melanophore), 422,* 758, 



759 



phycocyanin, 114, 118, 151, 152, 162, 

 94.4. 



phycoerythrin, 118, 153, 162, 164, 

 94-4- 



plant, ri5-118, 227-247 

 xanthophyll, 115, 153, 228, 229, 

 244, 245, 758, 759 



Pileus, 179 



Pine tree (Pinus), 138-143, 140,* 141,* 



201-203 

 Pineal gland, 495,* 507,* 509, 512 

 Pinna, 138,* 195, 203 

 Pinnule, 138,* 304, 307* 

 Pinworm, 539 



Pisces, 330,*-332,* 331 {see also Fish) 

 Pistil, 143, 146,* 208-216, 223,* 225, 



225* 

 Pitcher plant, 636, 668* 

 Pith of plants, 145,* 147* {see also 



Tissues, plant) 

 Pitocin {see Endocrine glands) 

 Pitressin {see Endocrine glands) 

 Pituitary, 507,* 507, 510 

 Pituitrin {see Endocrine glands) 

 Placenta, 340, 453, 455,* 509, 512 

 Planaria (Dugesia), 293, 368-373, 



369*-371,* 537 

 Plankton, 112, 151 

 Plant, anatomy and physiology, 219- 



248 



Plant — Cont'd 



breeding {see also Heredity) 



cellular organization, 55-61 



coloration, 758-760 



classification, 865, 866 



ecology {see Ecology) 



economic importance, 249-271 



fossils, 605-619 



geography, 591 



hormones, 239-242, 768 



lice (aphids) {see Insects) 



number of species, 110 



quarantine, 637 



tropism, 242, 243 



wild life, 796 

 Planula, 285,* 290* 

 Plasma, 390, 396, 405, 486 {see also 

 Tissues, blood) 



gene, 357 

 Plasmodesma (Plasmodesmata), 41,42* 

 Plasmodium, 123, 123,* 124, 167, 172, 



275, 276, 363-367, 532, 784 

 Plasmolysis, 105, 754 

 Plasmosome, 40,* 44 {see also Nucleo- 

 lus) 

 Plast (plastid), 43, 114-116, 118, 130, 



153, 159, 160, 162, 164 

 Plate, calcareous, 309, 310 



genital, 304* 



horny, 333 

 Platelet, 485, 486 {see also Tissues, 

 blood) 



Platyhelminthes, 293-295, 537, 538 



Pleura, 492 



Pleurococcus {see Protococcus) 



Pliny the Elder, 801 



Plumule, 144,* 210, 211, 213 



Pod, 144* 



Poisons, 404,* 406 



from plants, 267-270 

 Polar body (polocyte), 452, 516, 709, 

 710* 



nucleus, 206, 225* 



transportation, 240 

 Polarity, 241, 242, 499 

 Pole, 445,* 452 

 Polian vesicle, 306* 

 Pollen, 405, 407, 634 



basket, 401,* 403 



brush, 401,* 402 



comb, 401,* 404 



grain, 140,* 142, 143, 146,* 201- 

 204, 206-213, 225, 225* 



spur, 401,* 402 



tube, 140,* 143, 201-204, 206-212, 

 225* 



Polocyte {see Polar body) 

 Polychaeta, 308 

 Polygordius, 308 



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