1920] 



INDEX OF SUBJECTS. 



983 



Pruning — 



and economy of water, 235. 



effect on grapefruit, 439. 



effect on lemons, 239. 

 Pscudococcus — 



bromclicc, notes, 52. 



citri. (Sec Citrus mealy bug.) 



nipw, notes, 851. 



spp., control, 660. 

 Pseudogonatoptts sogatca n. sp., descrip- 

 tion, 857. 

 " Pseudo-inde.x for lodin," use of term, 315. 

 Pseu domo n as — 



campiStria on cabbage seedlings, 751. 



citH. (See Citrus canker.) 



juglandis, control, 350. 



phaseoli, notes, 652. 



polysaccharidarttm n. sp., studies, 524. 



radicicola. (See Bacillus radicicola. ) 

 Psocids, control, U.S.D.A., 53. 

 Psylla — 



isitis, notes, 461. 



mali, occurrence in Nova Scotia, 850. 

 Psyllldse, new genera and species, keys, 450. 

 Puccinia — 



antirrhini, notes, 841. 



aspaiagi. (See Asparagus rust.) 



coronata, biologic forms, 653. 



glumarum, notes, 45. 



graminis, notes, 45, 347. 



graminis, studies, Iowa, 653. 



graminis tritici, notes, 546. 



malvacearum and mycoplasm theory, 

 444. 



phakopsoroides n. sp., description, 244. 



spp. and Undo sp. comparison, 244. 



spp., morphological study, 844. 



spp. notes. 346. 



spp., temperature of spore germination. 

 N.H., 842. 



subnitens and secial hosts, 444. 

 Pullets — 



care in summer, N.J., 174. 



egg production and broodiness, N.J., 

 173. 



(Bee also Hens.) 

 Pulmonary disease, relation to Ascaris, 80. 

 Pulpwood — 



American, 650. 



fungi attacking, 651. 



(See aluo Wood pulp and Paper-making 

 materials.) 

 Pulse, as affected by high altitudes, 565. 

 Purdue University and Station, notes, 198, 



398, 799. 

 Pycnidla, origin and development, 226. 

 Pyotherapy, review of literature, 580. 

 Pyrauata — 



ainsllei, studies, Conn.State, 251. 



caffreii, n, sp., description, 661. 



nubilalis, notes. Mo., 759. 



nubiialis on broom corn, 161. 



nubilalis, parasites of, 858. 



spp., distinguishing characters, 661. 

 Pyrhellometer, Callendar, notes, U.S.D.A., 

 718. 



Pyrldln sulphate, cause of caking in am- 

 monium .sulphate, 25. 

 Pythium — 



butleri n. sp., notes, 445. 



grncile, notes, 652. 



palmivoruTrij notes, 445. 

 Quarantine — 



orders, horticultural, of California, 741. 



work with green Japanese beetle, 362. 

 Quaylea (n. g.) aliena, notes, 662. 

 Quebracho logs, exports from Argentina, 95. 

 Quince diseases, control, 544 ; 111., 847. 

 Quinces — 



spray calendar, N.J., 37. 



variety tests, Md., 143. 

 Rabbit- 

 diseases, 887. 



meat, digestibility, U.S.D.A., 365. 



meat, recipes, U.S.D.A., 365, 378. 

 Rabbits — 



as affected by vitamin deficiency, 369, 



care and management, 873. 



exhibition standard.s, 575. 



feeding experiments. Wash., 676. 



protection of fruit trees from, Ohio, 

 340. 



raising, U.S.D.A., 378. 



raising for skins. Can., 873. 



treatise, 174. 

 Rabies virus — 



effect of ether on, 81. 



preservation, methods, 583. 

 Radiation — 



nocturnal, intensity at high altitudes, 

 718, 



solar, in relation to plant distribution, 

 731. 



solar, measurements, U.S.D.A., 719. 



solar, observations, U.S.D.A., 117. 



solar, variation in, effect on weather, 809. 



solar, world obsei-vatories for, U.S.D.A., 

 719. 

 Radishes — 



carbon-nitrogen ratio for, 430. 



culture, 638. 



root development, 834. 



variety tests, Tex., 36. 

 Rain — • 



absorption, factors affecting. Mo., 721, 



effect on boll weevil poisoning, 162. 



effect on sprays, 657. 



fertilizing value. Can., 728. 

 Rainfall — 



as affected by large reservoir, U.S.D.A., 

 119. 



as affected by lunar periods, 417. 



data for determining road conditions, 

 U.S.D.A., 117, 



effect on critical periods of plant growth, 

 207. 



effect on nitrate loss by drainage, 19. 



effect on wheat yield in Australia, 208. 



of Australia, 208, 319. 



of California, 209. 



of South America, forecasting, 418, 



of Soutb Dakoto, 619. 



