846 
Polyplacophora 
Polypodium . 
Polyprotodontia 
Polypterus . 
Polyspermy . 
Polystomella 
Polystomum 
Polyzoa 
Pond snail . . : 
Pons Varolii. zi : 
Pontobdella . . 
Porcellenaster 
Porcellio 
Porcupine. 
Porifera 
Porocytes  . 
Porpita . 
Porpoise. 
Portal vein . : 
Portuguese man- -of-war . 
Portunus. . . 
Post-anal gut 
»» caval vein 
Potamogale . 
Powder-down 
Praecoces 
Preesternum . 
Prairie-dog . 
Prawn . 
Precaval veins F 
Preen gland of Pigeon 
Prepuce 
Priapulide . 
Priapulus. ‘ 
Primary vesicles of brain 
Primates. . 
Primitive groove 
>, streak 
Pristis . . 
Pro-amnion . 
Proboscidea . 
Procavia 
Proceelous . 
Proctodzeum 
Procyon ; 
Proechidna . 
Proneomenia 
Pronephros . 
Prongbuck . 
Propterygium 
ae 
642, 
642, 
INDEX 
PAGE PAGE 
418 | Proscolex . . . + 190 
167 | Prosencephalon » 484 
746 | Prosimiz + 983 
570 | Prostate glands 719 
63 | Protandrous. 520 
92 | Protective colouring of Insects 357 
188 | Proteles é P ‘ e ORF 
249 | Proteomyxa . . - 107 
421 | Proterosauria ‘i F . 620 
709 | Proterospongia . 3 . 134 
244 | Proteus . ‘ . 606 
260 » animalcule (see 
308 Ameeba) . » 89 
773 | Protobranchia ‘ a + 426 
124 | Protocercal . = ‘i - 564 
126 | Protodrilus . ‘ i + 234 
173 | Protogynous , ‘ + 453 
770 | Protohippus . . . » 762 
715 | Protohydra . . © - 149 
173 | Protomyxa . . . 107 
310 | Protoplasm . 7 + 31, 45, 51 
502 | Protopterus . . 575 
643 | Protospongia . : 133 
779 | Prototheria . 7 . 740 
655 | Prototracheata . 318 
679 | Protovertebre = Mesoblastic 
695 segments . . 601 
772 | Protozoa 2 : . 88 
309 », and Disease . » 120 
627 55 and Metazoa . . 22 
657 33 classification of . 106 
719 93 functions in the » 412 
247 3 general interest of ,. 122 
247 93 history of the . . II9 
487 1.8 immortality of . 122 
785 3 reproduction in » 116 
684 es structure of . II4 
684 survey of the . + 107 
567 Proventriculus ‘i : - 666 
643 | Provortex 5 - 182 
764 | Psalterium . a js » 758 
763 | Pseudaxonia. : ‘ . 169 
582 | Pseud-heemal system . » 259 
498 | Pseudobranch . + « 556 
778 | Pseudogastrula 5 + 432 
740 | Pseudolamellibranchia . » 426 
424 | Pseudonavicelle , ‘ « IO 
509 | Pseudopodia ’ . . 89 
759 | Pseudopus . . . - 629 
537 | Pseudoscorpionidze . » 366 
