N 
40 
Pauropoda 
. # 
3431 
Radiolaria , . 
. # 
0431 
Pedagogy . . 
0050 
Regeneration 
, . 
0215 
Pedipalpi . . 
* . . 
3031 
Reproduction 
, , 
0215 
Pelagic Animals . . 
• . . 
0219 
Reproductive Organs 
. , 
0207 
Pelecinidae 
. # 
4631 
Reptilia . . 
, , 
5600 
Pelecypoda 
, , 
, , 
2213 
Resemblances 
, , 
0219 
Periodicals 
. . 
0020 
Respiration 
, , 
0211 
Peripatus . . 
3231 
Respiratory Organs 
, . 
0207 
Perissodactyla 
. . 
. . 
6031 
Rheae 
, . 
5831 
Perlidae . . 
3831 
Rhipidoglossa 
, . 
2231 
Plialangida 
3031 
Rhiptoglossa 
5631 
Phasmidaj. . 
. , 
3831 
Rhizopoda 
0481 
Phenology 
. . 
. . 
0219 
Rhopalocera 
4431 
Philosophy 
. . 
. . 
0000 
Rhynchosauria . . 
. . 
5631 
Phcenicopteri 
. . 
. . 
6831 
Rhynchota 
4000 
Phoronis . . 
. . 
. . 
1800 
Rhynchocephalia 
. , 
6631 
Phylactolaema . . 
. . 
• . 
2031 
Rodentia . . 
6031 
Phyllopoda 
. . 
. . 
2631 
Rotifera . . 
1600 
Phylogeny 
. . 
0223 
Rudimentary Organs 
. , 
0207 
Physiology 
. . 
0211 
Sarcosporidia 
• • 
0431 
Physopoda 
. . 
. . 
3600 
Saururee . . 
5831 
Phytophthires 
. . 
. . 
4031 
Scaphopoda 
, , 
•2231 
Pici 
. . 
. . 
5831 
Schizopoda 
# # 
2631 
Pisces 
. . 
. . 
6400 
Scolopendrella 
, , 
3431 
Plagiostomi 
. . 
5431 
Scorpionida 
, f 
3031 
Plankton . . 
. . 
0219 
Scyphomedusae . . 
0831 
Planipennia 
. . 
3831 
Senescence 
• • 
0211 
Platyhelminthes . . 
. . 
. . 
1200 
Sense, Organs of . . 
# , 
0207 
Plesiosauria 
# # 
. . 
6631 
Function of . . 
# # 
0211 
Podargidae 
, , 
. . 
5831 
Sessiliventres 
# . 
4631 
Podophthalma . . 
. . 
2631 
Sex, Production of 
# # 
0211 
Polychaeta 
. . 
1800 
Sexual Relations . . 
0219 
Polyzoa . . 
2000 
Siphonaptera 
3600 
Porifera . . 
0600 
Sirenia 
6031 
Primates . . 
6031 
Siricidae . . 
4631 
Proohordata 
, , 
, , 
5000 
Size, Variations of 
# # 
0223 
Procolophonia 
. , 
5631 
Skeletal Structures (internal) of 
Proctotrupidae 
. . 
4631 
Invertebrates . . 
• • 
0207 
Proganosauria 
. . 
. , 
5631 
Social Relations . . 
, , 
0219 
Proportions, Variations 
i of 
. . 
0223 
Societies, Reports of 
, , 
0020 
Prosobranchiata . . 
, , 
2231 
Solifugae . . 
3031 
Protection 
. , 
0219 
Sound Production 
, , 
0219 
Proteomyxa 
, . 
. . 
0431 
Spermatogenesis . . 
. , 
0215 
Protorosauria 
. . 
. . 
5631 
Spermatozoon 
. . 
0215 
Prototracheata . . 
. . 
. . 
3200 
Sphegidae . . 
4631 
Protozoa . . 
0400 
Spongida . . 
0600 
Pselaphognatha . . 
. . 
. . 
8431 
Sporozoa . . 
0431 
Pseudoscorpiones. . 
. f 
. . 
3031 
Steatornis. . . . 
5831 
Psittaci . . 
6831 
Steganopodes 
. . 
6831 
Peocidee . . 
3831 
Stegocephala 
, , 
663 L 
Psychology 
. . 
. . 
0219 
Stephanidae 
. . 
4631 
Psyllidae . . 
4031 
Stereornithes 
. , 
5831 
Ptenoglossa 
. . 
. . 
2231 
Stomatopoda 
. . 
2631 
Pterocletes 
. . 
. . 
6831 
Strepsiptera 
, , 
4800 
Pteropoda. . 
2231 
Striges , . . . 
5831 
Pterosauria 
. . 
6631 
Stromatoporidae . . 
. . 
0831 
Pulmonata 
, , 
2231 
Strutliiones 
, , 
5831 
Pygopodes 
. . 
. . 
5831 
Stylommatopliora 
, . 
2231 
Pytlionomorpha . . 
• • 
. . 
6631 
Subungulata 
*« , 
6031 
Rachiglossa 
• • 
2231 
Symbiosis . . . . . . 
V •• 
0219 
