810 Index. 



Page. 

 Orchard trees, pruning 475 



setting 475 



stocks for 474 



top-working 475 



Orchards, cultivation 479 



fertilization 479 



inter-crops and cover-crops 481 



pests in 481 



P. 



Palmer worm on apple 377 



Paracalocoris colon associated with false-tarnished plant-bug 328 



Paracalocoris scrupeus associated with false-tarnished plant-bug 329 



Parrott, P. J., bulletin by 308 



circular by 353, 361 



Peaches, new varieties described 446 



Pear, new varieties described 445 



psylla, circular on 353 



controlled by spraying 356 



description of 354 



life history of 354 



natural enemies of 356 



notes on 30 



precautions in treatment 360 



work of false-tarnished plant-bug on 308 



Peas, plant food used by 259, 262, 264, 267 



" Pedigreed " trees not recommended 473 



Periodicals received by Station, list 782 



Phosphates, effect of fineness upon availability 246 



Phosphoric acid from different sources, availability 238 



Pliytophthora infestans, persistence in soils 180 



Plant-bug deforming pears 771 



false-tarnished, biology of 316 



circular on 30, 361 



conditions favoring injury 324 



control in pear orchards 364 



description 361 



economic history of 309 



food plants of 312 



habits of 323, 363 



insects associated with 327 



life history of 322, 363 



life stages of 317 



methods of control 326 



nature of injuries 313, 362 



on pear 28, 308 



