978 



EXPERIMENT STATION RECORD. 



[Vol. 43 



Pine — Continued. 



shoot moth, Eui-opean, parasites of, 

 259. 



sugar, analysis, 506. 



■western yellow, windfall loss, 841. 



yellow, analysis, 506. 



(See also White pine.) 

 Pineapples, as affected by ultraviolet rays. 



731. 

 Pink bollworm. (/S'ee Cotton boUworm, 



pink.) 

 Tionca forficalis, parasite of, 858. 

 Pipes, gas, cement joints for, 482. 

 Piricularia oryzw, notes, 444. 

 Pirocyonia danicli, stability and heredity, 



818. 

 Piroplasma — 



(Bahesia) cabalU, notes, 83. 



spp., affecting bovines, 883. 



spp., notes, 77, 82. 

 Piroplasmosis— 



bovine. (See Texas fever.) 



canine, transmission in Prance, 83. 



canine, transmission in Tunis, 84. 



of the horse, 83. 

 Piroplasms, classification, 883. 

 Pissodes stroM, notes. Conn. State, 251. 

 Pistache collar disease, control, 243. 

 Pits, construction for manure conservation, 



423. 

 Pituitary — 



body, changes in deficiency disease, 664. 



feeding of white rats, effects, 67. 



gland and thyroid, correlation, 770. 

 Plwsius javanus, notes, 52. 

 Plane — 



tree disease as affected by dry weather, 

 652. 



trees, parasites of, 754. 



Plant- 

 analyses and fertilizer requirements of 



soil, 518. 

 assimilation, theory of, 526. 

 •breeding in Ontario, 235. 

 breeding, methods, 535. 



(See also Heredity and Hybridiza- 

 tion.) 

 breeding experiments. (See Apples, 

 Corn, Cotton, Tomatoes, Wheat, etc. ) 

 cancers, studies, 242. 

 cells, abnormalities, 732. 

 cells, concentrations of electrolytes in, 



633. 

 cells, lipoids in, 524. 



(See also Cells.) 

 chromosomes. (See Chromosomes.) 

 colloids, studies, 524. 



disease — 



inspection in Jamaica, 48. 

 survey, notes, Okla., 44. 



diseases — 



and pests, 750. 



control, 842. 



development in dry weather, 652. 



dissemination by insects, 842. 



effect of soil and fertilization, 513. 



Plant^Contlnued. 



diseases — continued. 



in Dutch East Indies, 45. 

 in England and Wales, 45, 652. 

 in Indiana, 243. 

 in Italy, 346. 

 in Porto Rico, 544. 

 new, 544. 



notes, N.Y.State, 544. 

 perpetuation, 242. 

 relation to soil reaction, 513. 

 r61e of bacteria in, 444. 

 transmission by insects, 450. 

 (See also Pungi and different host 

 plants.) 

 distribution in undrained depressions 



near Sacramento, 224. 

 ecology of Kansas sand hills, 731. 

 formations at different altitudes, 149. 

 growth — 



apparatus for measuring, 32. 



as affected by bacterized peat, 514. 



as affected by carbon dioxid, 321. 



as affected by light, 431. 



as affected by meteorological pre- 



nomena, 207. 

 as affected by thyroid constituents, 



225. 

 compound-interest law, 29. 

 effect of aeration on roots, 327. 

 function of sunshine in, U.S.D.A., 



509. 

 insterile soil, 422. 

 relation to carbon dioxid, 510. 

 relation to climatic control, 431. 

 relation to soil reaction, 513. 

 studies, 428, 431. 

 (See also Plants.) 

 growth-promoting substances in com- 

 posts, 815. 

 hybridization experiments, 535. 

 hygiene, illustrative material, 635. 

 inspection. (See Nursery inspection.) 

 lice, jumping, of Palseotropics, 450. 

 life zones, I'ole of sedges iu, 129. 

 metabolism, carbon - nitrogen ration, 



430. 

 parts, orientation, studies, 730. 

 pathogen and host, differential stain- 

 ing, 444. 

 pigmentation. (See Pigmentation.) 

 production, course of study, 797. 

 societies of Petoskey-Walloon Lake re- 

 gion, 523. 

 tissues, semipermeabillty in, 225. 

 tissues, vitamin A extraction from, 165. 

 Plants — 



animals injurious to, 152. 



as affected by centrifugal force, 327. 



as affected by fluorin, 523. 



as affected by gases, 523. 



as affected by organic substances, 822. 



as affected by winter of 1916-17, 326. 



as food substitutes in Germany, 204. 



as wUd-duck food in Nebraska, U.S. 



D.A., 50. 

 barium in, Ky., 327. 



