456 INDEX. 



Page. 



Podilymbus podiceps 340 



Poemenis sp 321 



Pogonia ophlogossoides 219, 239 



Pogonoclieriis mlxtus 210 



Polygala paucifolla 243 



Polygalaceae 243 



Polygyra ^5 



albolabris '.' 25, 31, 68, 69, 72, 73, 75, 77, 283 



fraterna 283 



Polypodiaceae 231 



Polypodium vulgare 232 



Poly trichum commune 220, 229 



strictum 229 



Pomaceae 237 



Pond associations, beetles 161 



weeds 63, 232 



Pontoporela 35 



Pooecetes gramineus 36G 



Poppy family 241 



Populus balsamif era 236 



grandldentata 230 



tremuloides 225, 236 



Porcupine mountains 125, 250, 252 



Porifera 249 



Port Arthur, climate 41, 43, 100 



Nipisslng beach 38 



Huron outlet 33, 34 



Post glacial origin of the fauna 166. 394 



Potamogeton 18, 19, 29, 251, 252 



crispis ' 18 



heterophyllus 233 



hillii 233 



natans 232 



pectinatus 23.S 



perfoliatum 22, 233, 250 



Poteatilla arguta 242 



f ruticosa 242 



llttoralls 222,242 



tridentata 222, 242 



Prairie sharp-tailed grouse 340, 347 



Precipitation 42 



Preulx, Chas., mammals 407, 414, 416 



Previous biological investigations 4 



I'rickly rose .' 242 



Primrose family 245 



Primula mistassinica 222, 245 



Primuiaceae 245 



Principles' of succession ] 46 



Procumbent juniper 230 



Prosopldae 310 



Prosopis 74 



basalis 319 



sp 31!) 



Prunella vulgaris 240 



Prunus pennsylvanica 14, 20, 28, 29, 72, 225, 237 



vlrglniana 237 



Psammophila sp 320 



Pselaphidae 205 



Pseudanthonomus (Anthonomus) crataegl 211 



Pslthyrus latitarsus 317 



Pteridophytes 231 



Pteria agullina 232 



