N 
40 
Pauropoda 
3431 
liadiolaria 
. , 
0431 
Pedagogy . . 
0050 
Regeneration 
, . 
0215 
Pedipalpi . . 
303 L 
Reproduction 
. . 
0215 
Pelagic Animals . . 
0219 
Reproductive Organs 
. , 
0207 
Pelecinidce 
4631 
Reptilia . . 
. . 
5600 
Pelecypoda 
2213 
Resemblances 
. , 
0219 
Periodicals 
0020 
Respiration 
, , 
0211 
Peripatus . . 
3231 
Respiratory Organs 
, . 
0207 
Perissodactyla 
6031 
Rbese 
5831 
Perlidee 
3831 
Rliipidoglossa 
. . 
2231 
Phalangida 
3031 
Rhiptoglossa 
5631 
Phasmida?. . 
3831 
Rhizopoda 
0431 
Phenology 
0219 
Rhopalocera 
. . 
4431 
Philosophy 
0000 
Rhynchosauria . . 
. . 
5631 
Phoenicopteri 
5831 
Rhyncliota 
. . 
4000 
Phoronis . . 
1800 
Rhynchocephalia 
5631 
Phylactolaema . . 
2031 
Rodentia . . 
6031 
Phyllopoda 
2631 
Rotifera . . 
1600 
Pliylogeny 
0223 
Rudimentary Organs 
. . 
0207 
Physiology 
0211 
Sarcosporidia 
. . 
0431 
Physopoda 
3600 
Saururse . . 
. , 
5831 
Phytophtliires 
4031 
Scaphopoda 
. . 
2231 
Pici 
5831 
Schizopoda 
, . 
2631 
Pisces 
54C0 
Scolopendrella 
, , 
3131 
Plagiostomi 
6431 
Scorpionida 
. . 
3031 
Plankton . . 
0219 
Scyphomeduste . . 
, , 
0831 
Pluniponnia 
3831 
Senescence 
, , 
0211 
Plutyholininthcs . . 
1200 
Sense, Organs of . . 
, , 
0207 
Plesiosauria 
563 L 
— Function of 
. , 
0211 
Podargidco 
5831 
Sessiliventres 
. , 
4631 
Podophthalma . . 
2631 
Sex, Production of 
. . 
0211 
Polycheeta 
1800 
Sexual Relations . . 
. . 
0219 
Polyzoa . . 
2000 
Siphonaptera 
3600 
Porifera . . 
0600 
Sirenia 
, . 
6031 
Primates . . 
6031 
Siricidee . , 
4631 
Proohordata 
5000 
Size, Variations of 
0223 
Procolophonia 
5631 
Skeletal Structures (internal) 
of 
Proctutrupidee 
4631 
Invertebrates . . 
. . 
0207 
Proganosauria 
5631 
Social Relations . . 
. . 
0219 
Proportions, Variations 
; of 
0223 
Societies, Reports of 
. . 
0020 
Prosobranchiata . . 
2231 
Solifugse . . 
3031 
Protection 
0219 
Sound Production 
0219 
Proteomyxa 
0431 
Spermatogenesis . . 
. . 
0215 
Protorosanria 
6631 
Spermatozoon 
. . 
0215 
Prototracheata . . 
3200 
Sphegidce . . 
4631 
Protozoa . . 
0400 
Spongida . . 
. , 
0600 
Pselaphognatha . . 
3431 
Sporozoa . . 
0431 
Pseudoscorpiones. . 
3031 
Steatornis. . 
. . 
6831 
Psittaci . . 
5831 
Steganopodes 
. . 
6831 
Peocidce . . 
3831 
Stegocephala 
. . 
5631 
Psychology 
0219 
Stephanidse 
4631 
Psyllidae . . 
4031 
Stereornitlies 
. . 
6831 
Ptenoglossa 
2231 
Stomatopoda 
. . 
2631 
Pterocletes 
5831 
Strepsiptera 
. . 
4800 
Pteropoda. . 
2231 
Striges 
5831 
Pterosauna 
5631 
Stromatoporidse . . 
. . 
0831 
Pulmonata 
2231 
Struthiones 
. . 
5831 
Pygopodes 
5831 
Stylommatophora 
. . 
2231 
Pythonomorpha . . 
5631 
Subungulata 
. . 
6031 
Racliiglossa 
2231 
Symbiosis . . 
0219 
