338 AIAINK AGRICULTURAL EXPERIMENT STATION. I9II. 



PAGE 



Oat crop of Maine 25 



Oats, treatment of seed 26 



Oats, variety tests 25. 



Oats, yield of experiment plots 27 



Odontopoda Sayii 264. 



Oedemasia concinna 241 



Opius sp 243 



Orchard spraying, effects on foliage 56' 



Orchard spraying, effects on fruit 58 



Orchard spraying for fungus 62 



Orchard spraying at Highmoor Farm 53 



Orchard spraying, injury from 66' 



Orchard spraying problems 33 



Orthoptera 235 



Otiorhynchus sulcatus ' 8 



Ox bot-fly 237 



Paedogenesis in Tanytarsus 3 



Palaeoanaclinia 267 



Paleacrita vernata I 



Parthenogenesis in Tanytarsus 5 



Pegomyia vicina 238 



Pellagra and Simulium 4 



Pemphigus acerifolii 244 



rhois 22, 236 



tessellata , 236, 244 



tessellata, bibliography 248 



tessellata, life cycle 247 



venafuscus 236- 



Phenococcus sp 10 



Pheosia dimidiata i 



Phobetron pithecium 241 



Pholus pandoras 241 



Phorbia cinerella : 6- 



Phorbia fusciceps 5, 238 



Phormia regina 6 



Phthinia curta 291 



fraudulenta 291 



tanypus 282 



Phytophthora infestans 203 



Pimpla inquisitor 243 



Pissodes strobi 7 



Plodia interpunctella z 



Polyxena 306 



Potato, blackleg or blackstem disease 201 



Potato diseases, cooperative experiments 209 



Potato diseases, preventive measures 219- 



Potato diseases, treatment of seed 207 



Potato, elimination of blackleg 226- 



Potato, infection of healthy seed pieces 222- 



