426 



EXPERIMENT STATION RECORD 



Peridroma— 



margaritosa spp., notes, (28) 854. 



saucia, see Cutworm, variegated. 

 Perilampidae of Australia, (39) 154. 

 Perilampidae syrphi n.g. and n.sp., description, (31) 



654. 

 Perilampus— 



chrysopaelaevicephalusn.var., description, (36) 

 556. 



chrysopae n.sp., description, (31) 459. 



hyalinus— 



investigations, (27) 261 

 leaf oviposition, (37) 162. 

 parasitic on locusts, (32) 60. 



sp., notes, (27) 262; (31) 757. 

 Perilitus— 



americanus, parasitic on lady beetles, (31) 355. 



brevicollis, notes, (30) 459. 



eleodis n.sp., description, (30) 256. 



leptopsi, parasitic on apple root borer, (26) 353. 

 Perilla cake — 



analyses, (29) 467; (30) 267, 466. 



digestibility, (30) 267. 



feeding value, (29) 467, 869. 

 Perilloides bioculata, notes, (29) 455. 

 Perillus spp., notes, (27) 755. 

 Perinephritis in domestic animals, (26) 176. 

 Periodates, determination, (34) 712. 

 Periodicity, biological, (39) 317. 

 Periodids, organic, studies, (34) 502; (36) 313. 

 Periodol, studies, (39) 80, 286. 

 Periplaneta — 



americana, see Cockroaches, American. 



australasiae as a cotton pest, (32) 348. 



orientalis, remedies, (28) 157. 

 Peripneumonia in bovines, immunization, (26) 676. 

 Perisierola— 



emigrata n.sp., description, (37) 569. 



emigrata, parasitic on pink bollworm, (37) 667. 



nigrifemur, notes, (37) 569. 

 Perisoreus obscurus n.subsp., description, (39) 154. 

 Perisporiaceae of South Africa, (40) 132. 

 Perisporium wrightii, studies, (27) 352. 

 Perissarthron, new genus, (40) 655. 

 Perissopterus pulchellus, notes, (31) 356. 

 Peritoneum, absorption of fat in, (32) 563. 

 Peritonitis— 



In poultry, (39) 791. 



purulent, of the hen, (39) 393. 

 Peritymbia (Phylloxera) vitifolii pervastatrix, 



notes, (32) 847. 

 Permanganate — 



of potash, use against grape gray rot, (27) 850. 



solutions, preparation and keeping qualities, 

 (38) 412. 

 Permeability — 



as affected by trivalent and tetravalent cations, 

 (34) 34. 



notes, (35) 734. 



of barley grain, (40) 519. 



plant tissue, studies, (34) 731; (37) 128, 326, 



431, 632; (38) 25; (39) 25, 26, 223, 630, 730. 

 soils, (27) 819. 



soils, determination, (28) 29. 

 soils, relation to irrigation, (32) 586; (38) 788. 



protoplasmic, colloidal hypothesis, (40) 818. 



selective, in living cells, (38) 523. 



studies, tissue tension method, (37) 320. 

 Permutite— 



absorption of phosphoric acid by, (28) 518. 



nitrogen, assimOation by plants, (29) 127, 517. 

 Perocid, fungicidal value, (34) 847; (35) 46; (38) 151. 

 Perodipus ordii luteolus n.subsp., description, (37) 



757. 

 Peromyscus eremicus papagensis n.subsp., descrip- 

 tion, (37) 757. 

 Peronea minuta, parasites of, (31) 752. 

 Peronia ferrugana, notes, (29) 252. 

 Peronoplasmopara — 



cubensis, notes, (32) 342. 



cubcnsis, studies, (36) 249. 



sp. on hemp, (38) 753. 

 Peronospora— 



arborescens, notes, (31) 641; (34) 50; (36) 449; 

 (38) 547. 



cephalariae n.sp., studies, (29) 552. 



cubensis, notes, (28) 443. 



effusa, notes, (26) 548; (37) 550. 



effusa, oospore parasite of, (31) 641. 



gangliformis, prevention, (26) 342. 



grisea, notes, (31) 546. 



Peronospora — Continued. 



hyoscyami in tobacco seed beds, (33) 147. 



hyoscyanii, notes, (39) 551. 



infection studies with, (27) 47, 449. 



jaapiana in Bohemia, (35) 650. 



maydis, notes, (31) 242. 



maydis, studies, (37) 552. 



n.spp., notes, (32) 442. 



parasitica on Arabis laevigata, (32) 54. 



parasitica, staining, (26) 52. 



pedicularis n.sp., notes, (28) 241. 



(Plasmopara) viticola, studies, (31) 346. 



polvgoni on buckwheat, (36) 646. 



rela"tion to weather, (28) 550. 



schachtii, notes, (30) 748; (32) 544. 



schleideni, notes, (37) 553. 



sp., notes, (27) 253. 



sp. on cloves, (36) 348. 



sp. on hemp, (38) 753. 



sparsa, notes, (29) 650; (33) 854. 



spp. treatment, (26) 345; (28) 152, 245, 446, 552. 



trifoliorum, description, (26) 846. 



trifoliorum, notes, (28) 52; (32) 543. 



use of powdered fungicides against, (30) 651. 



viciae, notes, (29) 243; (39) 850. 



viciae, treatment, (32) 545. 



viticola, see Grape downy mildew. 

 Peronosporaceae — 



notes, (32) 544. 



perennial mycelium in, (34) 154. 

 Peronosporales, North American, studios, (32) 442. 

 Peroxidase — 



action on chlorophyll, (37) 203. 



active principle of, (29) 202. 



activity in diseased potatoes, (26) 548. 



as a ferment, (26) 202. 



as affected by alkalis, (29) 202. 



ferment nature of, (30) 11. 



histological-chemical detection, (26) 278. 



in alfalfa, (32) 411. 



human milk, (26) 410. 



mammary gland, (32) 412. 



milk as affected by heating, (29) 310. 



milk, inactivation, (40) 11. 



milk, notes, (29) 413. 



sterile milk, (28) 411. 



investigations, (33) 409. 



isolation from plants, (26) 326. 



notes, (27) 803. 



plant, mode of action, (36) 609. 



properties and action, (28) 609. 



reactions of milk, (32) 412. 



relation to respiratorv pigments of plants, (26) 

 326. 



separation from catalase, (27) 408. 



use of term, (33) 329. 

 Peroxydiastase of wheat, resistance to heat, (26) 888. 

 Perphosphate — 



effect on activity of soil bacteria, (31) 821 . 



use in agi'iculture, (38) 330. 

 Perries, single-variety, (40) 414. 

 Perry — 



analyses, (35) 717; (38) 114. 



clarifying with casein, (26) 26. 



defective, utilization, (40) 116. 



home manufacture, (40) 116. 

 Persea— 



gratissima, new beetle affecting, (26) 151. 



pubescens, analyses, (26) 612. 

 Persimmon codling moth in Japan, (40) 52, 167. 

 Persimmons — 



acidity, (32) 110; (37) 714. 



adaptation and variety tests, (29) 41. 



artificial ripening of, (26) 327. 



astringencv in, (35) 820. 



beetles affecting, (27) 458. 



changes in during ripening, (28) 444. 



culture and use, (32) 744. 



culture in southern Texas, (32) 539. 



diseases in Japan, (40) 52. 



dried, preparation, (27) 344. 



induction of nonastringency in, (29) 264. 



Japanese — 



analyses, (28) 525. 



anthracnose of, (27) 251; (37) 656. 



as affected bv pollination, (31) 440. 



culture experiments, (28) 142; (38) 41. 



culture in California, (36) 141. 



poUenizers for, (30) 740. 



ripening artificially, (27) 344. 



loss of astringency during ripening, (26) 327. 



