N 
40 
Pauropoda 
• 
3431 
Radiolaria 
. # 
0431 
Pedagogy . . 
0050 
Regeneration 
• . 
0215 
Pedi palpi . . 
. . 
3031 
Reproduction 
0215 
Pelagic Animals . . 
0219 
Reproductive Organs 
0207 
Pelecinidte 
4631 
Reptilia . . 
5600 
Peleeypoda 
. , 
2213 
Resemblances 
, . 
0219 
Periodicals 
. . 
. . 
0020 
Respiration 
. # 
0211 
Peripatus . . 
, . 
. . 
3231 
Respiratory Organs 
0207 
Perissodactyla 
. . 
6031 
Rheae 
5831 
Perlidae . . 
. . 
3831 
Rhipidoglossa 
. , 
2231 
Phalangida 
. . 
3031 
Rhiptoglossa 
. . 
5631 
Phasmida?. . 
3831 
Rhizopoda 
0431 
Phenology 
. . 
0219 
Rhopalocera 
4431 
Philosophy 
0000 
Rhynchosauria . . 
5631 
Phamicopteri 
5831 
Rhynchota 
. , 
4000 
Phorunis . . 
1800 
Rhynchocephalia 
5631 
Phylaetolaema . . 
2031 
Rodentia . . 
6031 
Phyllopoda 
. . 
2631 
Rotifera . . 
, . 
1600 
Pliylogeny 
. . 
0223 
Rudimentary Organs 
0207 
Physiology 
. . 
0211 
Sarcosporidia 
0431 
Physopoda 
3600 
Saururse . . 
. m 
5831 
Phytophthires 
4031 
Scaphopoda 
2231 
Pici 
5831 
Scliizopoda 
. . 
2631 
Pisces 
54C0 
Scolopendrella 
3131 
Plagiostomi 
. . 
. . 
5431 
Scorpionida 
. . 
3031 
Plankton . . 
0219 
Scyphomedusm . . 
0831 
Planipennia 
. , 
. . 
383 L 
Senescence 
. , 
0211 
Platyhelininthes . . 
. . 
1200 
Sense, Organs of . . 
0207 
Plesiosauria 
, , 
. . 
5631 
Function of 
0211 
Podargidce 
. . 
6831 
Sessiliventres 
4631 
Podoj)hthalma . . 
. . 
. . 
263 L 
Sex, Production of 
0211 
Poly ch seta 
. . 
1800 
Sexual Relations . . 
0219 
Polyzoa . . 
2000 
Siphonaptera 
3600 
Porifera . . 
0600 
Sirenia 
6031 
Primates . . 
. , 
6031 
Siricidee . . 
4631 
Prochordata 
5000 
Size, Variations of 
, , 
0223 
Procolophonia 
5631 
Skeletal Structures (internal) 
of 
Proctotrupidse 
. . 
4631 
Invertebrates . . 
0207 
Proganosauria 
. . 
. . 
5631 
Social Relations . . 
0219 
Proportions, Variations 
of 
. 
0223 
Societies, Reports of 
0020 
Proeobranchiata . . 
. . 
2231 
Solifugse . . 
3031 
Protection 
. . 
0219 
Sound Production 
0219 
Proteomyxa , . 
. . 
0431 
Spermatogenesis . . 
0215 
Protorosauria 
. . 
, , 
5631 
Spermatozoon 
. , 
0215 
Prototracheata . . 
, . 
, , 
3200 
Sphegidte . , 
4631 
Protozoa . . 
0400 
Spongida .. 
0600 
Pselaphognatlia . . 
. . 
3431 
Sporozoa . . 
0431 
Pseudoscorpiones. . 
. . 
3081 
Steatornis.. .. 
. . 
6831 
Psittaoi . . 
683 L 
Steganopodes 
. . 
5831 
Psocidai . . 
8831 
Stegocephala 
5631 
Psychology 
. . 
0219 
Stephanidse 
4631 
Psyllidae . . 
4031 
Stereornitlies 
5831 
Ptenoglossa 
. . 
2231 
Stomatopoda 
2631 
Pterocletes 
. . 
5831 
Strepsiptera 
4800 
Pteropoda. . 
2231 
Striges 
5831 
Pterosauria 
. . 
5631 
Stromatoporidie . . 
0831 
Pulmonata 
. . 
. , 
2231 
Struthiones 
5831 
Pygopodes 
5831 
Stylommatophora 
2231 
Pytlionomorpha . . 
. . 
. . 
5631 
Subungulata 
6031 
Rachiglossa^ 
.. 
.. 
2231 
Symbiosis . . 
0219 
