442 



EXPERIMENT STATION RECORD 



Pipe — Continued. 



lines, efficiency, (28) 683. 

 lines, metal, construction, (34) 483. 

 Piper betle, composition of leaves, (31) 108. 

 Piper methysticum, insects affecting, (27) 453. 

 Piperidin, nitrification as affected by lime, (38) 119. 

 Pipes- 

 cement, for orchard irrigation, (30) 889. 

 concrete, construction, (29) 487. 

 concrete, for irrigation water, (29) 485. 

 corrugated metal, tests, (35) 580; (37) 288. 

 flow of water in, (29) 181, 290, 891; (30) 786. 

 jointed concrete, tests, (30) 689. 

 large, strength of, (31) 186. 

 pressure, for water conveyance, (30) 187. 

 reinforced concrete, tests, (30) 889; (31) 784; 



(32) 885. 

 theory of loads on in ditches, (29) 685. 

 water, loss of head in due to bend, (31) 384. 

 wood-stave — 



construction and use, (33) 886. 



flow of water in, (36) 281. 



frictional resistance in, (30) 885. 



repairing with concrete, (34) 890. 



specifications, (37) 487. 



use, (31) 685. 

 Pipette- 

 absorption, description, (40) 308. 

 automatic, description, (36) 202. 

 automatic suction attachment, (37) 503. 

 capillary, description, (40) 286. 

 for measurement of small volumes, (40) 806. 

 for sampling milk and its products, (36) 805. 

 for tubing culture media, (40) 12. 

 holder, description, (36) 275; (40) 581. 

 safety, new form, (38) 203. 

 washing device, (38) 203, 803. 

 Pipiza— 



californica n.sp., description, (38) 863. 

 pisticoides, notes, (36) 460. 

 Piptadenia peregrina, narcotic snuS from, (36) 734. 

 Pipunculidae of Virginia, (35) 259. 

 Pipunculids, life history, (33) 860. 

 Pipunculus — 



n.spp., descriptions, (34) 857. 

 spp., parasitic on sugar beet leafhoppers, (33) 

 747. 

 Piricularia— 



n.spp., descriptions, (40) 156. 

 oryzae, notes, (36) 846; (37) 838; (40) 845. 

 studies, (40) 156. 

 Piroplasma — 



annulatum, notes, (34) 384. 

 argentinum, notes, (27) 184. 

 bigeminum — 



and P. divergens, cross-immunization tests, 

 (37) 687. 



immunization, (26) 382. 



in cows in Eritrea, (38) 888. 



notes, (27) 182, 784. 



stage of in cattle ticks, (35) 385. 

 caballi— 



in equine biliary fever in India, (32) 278. 



notes, (29) 83. 



relation to equine piroplasmosis, (26) 177. 

 canis, culture in vitro, (30) 481, 781. 

 caniB, distribution in infected dogs, (26) 486. 

 divergens n.sp., description, (26) 683. 

 gibsoni, notes, (28) 83. 

 infection in healthy cattle, (30) 282. 

 notes, (27) 181. 



ovis, occurrence in Dalmatia, (29) 482. 

 spp. in cattle in Germany, (28) 82. 

 spp., notes, (26) 173, 782. 

 Piroplasmosis — 



bovine, see Texas fever, 

 canine — 



in Porto Rico, (31) 781. 



notes, (27) 782; (28) 83. 



notes and treatment, (26) 882. 



of Europe and .Africa, (30) 481. 



studies, (27) 884. 



treatment, (26) 889; (34) 276. 

 equine— 



in Algeria, (30) 282. 



in Canal Zone, (29) 83, 483. 



in Panama, (29) 682. 



notes. (26) 384. 



parasites of, (26) 177; (31) 382. 



relation to biliary fever, (26) 887. 



Piroplasmosis — Continued, 

 immunization, (31) 585. 

 in Barbados, (37) 483. 

 Brazil, (31) 85. 

 cattle inltaly, (40) 782. 

 cattle in Sweden, (40) 585. 

 domestic animals, treatment, (32) 273. 

 European cattle, (34) 82, 478, 575. 

 horses, camels, and hares, (30) 679. 

 Russian Turkestan, (37) 374. 

 sheep, (29) 81,482; (33) 282. 

 solipeds in Transcaucasia, (29) 582. 

 Yucatan, (27) 782. 

 infection through mucous membranes of dogs, 



(29) 483. 

 marginal points in, (26) 173. 

 monograph, (30) 79. 

 notes, (36) 880. 



parvum type, in cattle, (34) 383. 

 relapse in, (33) 281. 

 status and control, (37) 480. 

 transmission to pigs by ingestion, (37) 691. 

 treatment, (27) 184; (35) 379. 

 Pissodcs — 



notatus, notes, (26) 147; (28) 750. 



strobi, notes, (26) 856; (28) 353; (33) 252; (34) 158; 



(36) 856; (38) 459. 

 strobi, remedies, (33) 58; (36) 859. 

 strobi, studies, (39) 159. 

 validirostris, notes, (31) 849. 

 Pistaches, culture in southern Texas, (32) 539. 

 Pistachio — 



biology and culture, (37) 746. 

 culture in Crimea, (37) 145. 

 leaf spot, notes, (34) 843; (37) 551. 

 nuts, microscopic identification, (28) 565. 

 Pistol case-bearer, biology, (40) 757. 

 Pisum — 



gametic reduplication in, (30) 433. 

 genetic factors, (38) 226. 

 inheritance studies, (40) 147, 225. 

 sativum — 



as affected by light, (29) 526. 

 bacterial disease, (40) 844. 

 betainsin, (27) 203. 



relation of seed weight to mortality, (31) 35. 

 respiration in, (27) 523. 

 variations in, (30) 739. 

 tropisms of hypocotyl, (39) 629. 

 Pitanga, description and culture, (35) 144. 

 Pitcairnia .xanthocalyx, glycogen content, (27) 133. 

 Pitches, specifications and definitions, (35) 888. 

 Pith-ray flecks in wood, (29) 44. 

 Pittosporum tobira variegatum, bud variation, (37) 



546. 

 Pituitary — 

 body- 

 active substances of, (30) 578. 

 composition and physiological activity, (36) 



267. 

 extracts, effect on cows, (29) 578. 

 growth-controlling principle, (35) 8. 

 extract- 

 effect on growth of chickens, (32) 263. 

 effect on milk secretion, (31) 272; (32) 268, 



871; (37) 272. 

 effect on resting ovary in fowls, (33) 472. 

 use in bovine and equine obstetrics, (30) 

 180. 

 gland, feeding to white rats, (28) 370. 

 substance, effect on — 



egg production and growth, (34) 75, 668. 

 growth, (36) 468. 



growth and sexual development, (34) 765. 

 growth of white mice, (35) 865. 

 milk secretion, (30) 272. 

 Pituitrin — 



effect on milk secretion, (34) 270. 



in fetal pituitary and suprarenal glands, (34) 



675. 

 pressor effect on, (29) 882. 

 Pitymys savi, eradication, (36) 852. 

 Pityogenes — 



bidentatus, notes, (31) 61. 

 hopkinsi, studies, (36j 659. 

 n.spp., descriptions, (36) 659. 

 Pityokteineselegansn.sp., description, (35) 856. 

 Pityophthorus n.spp., descriptions, (34) 361. 

 Placenta — 



action of enzyms on, (40) 566. 



