SUBJECT INDEX 



423 



Pecans— Continued, 

 culture- 

 experiments, (28) 236. 

 in Florida, (29) 542. 

 Georgia, (33) 440. 

 Maryland, (37) 345; (40) 150. 

 North Carolina, (26) 337; (39) 344. 

 southern Texas, (32) 539. 

 southern Utah, (30) 41. 

 Texas, (36) 743. 

 distribution of nitrogen in, (36) 269. 

 insects affecting, (28) 249; (38) 157, 256, 762; (39) 



461, 557; (40) 56, 259. 

 monograph, (27) 645. 

 new, descriptions, (29) 436. 

 parent and propagated trees, (35) 145. 

 Phylloxera galls affecting, (32) 553. 

 self-sterility in, (35) 36, 41; (36) 344. 

 shelled, industry in Texas, (29) 61. 

 spraying, (33) 439. 

 storage, (34) 151. 

 studies, (40) 540. 

 top-working, (30) 843; (35) .344. 

 top-working on hickory, (34) 151; (35) 745. 

 value and adaptability in the South, (26) 744. 

 varieties, (34) 151; (37) 44. 

 winterkilling, sun scald, or sour sap, (37) 755. 

 wood rot, (40) 158. 

 Pecari angulatus bangsi n.subsp., description, (37) 



757. 

 Pecatonica River, flood control, (37) 186. 

 Pecos River, profile survey, (36) 583. 

 Pectase, action of, (3.5) 25. 

 Pectic substances of plants, (37) 309. 

 Pectin- 

 bodies, constitution, (40) 202. 

 determination in spices, (40) 115. 

 determination in sugar residues, (36) 415. 

 methyl alcohol, studies, (40) 204. 

 preparation, (37) 715; (39) 315, 609. 

 studies, (40) 804. 

 test in jelly making, (40) 558. 

 Pectinasein alfalfa, (32) 411. 

 Pectin ophora gossypiella, see Cotton bollworm, 



pink. 

 Pectins— 



of aucuba and sweet orange, (29) 008. 

 use in food products, (34) 167. 

 Pedicularis vulgaris, haustoria of, (39) 358. 

 Pediculi, remedies, (31) 58, 351. 

 Pedicuiidae, notes, (26) 655. 

 Pediculoides ventricosus — 



notes, (27) 561, 564, 565; (31) 656. 

 parasitic on fig moth, (26) 248. 

 Pediculopsis graminum— 

 notes, (28) 854. 



relation to pink bud rot, (28) 750. 

 Pediculus — see also Lice. 



capitis, relation to leprosy, (27) 858. 

 corporis, relation to trench fever, (39) 658. 

 humanis corporis^ 

 biology, (35) 460. 

 life history and remedies, (38) 765. 

 remedies, (35) 854; (39) 558. 

 spp., studies, (37) 850; (38) 159. 

 spp., transmission of poliomyelitis by, (28) 753. 

 spp., transmission of typhus fever by, (26) 759. 

 vestimenti, see Pediculus humanus corporis. 

 Pedigrees, uniform system for, (29) 665. 

 Pedogenesis, studies (26) 147. 

 Pedology, ancient ideas concerning, (30) 212. 

 Peganum harmala, density of cell sap, (32) 35. 

 Pegmatite granite, potash from, (27) 127. 

 Pegomyia — 



aflSnis, notes, (40) 758. 

 brassicae, see Cabbage maggot, 

 cepetorum, see Onion maggot, 

 chilensis, notes, (40) 648. 

 fusciceps, see Phorbia fusciceps. 

 hyoscyami — 



breeding experiments, (36) 658. 

 life history, (26) 452. 

 notes, (35) 466; (36) 57. 

 studies, (32) 351. 

 planipalpis, studies, (27) 553. 

 ruficeps, notes, (26) 250. 

 spp., breeding experiments, (36) 658. 

 spp., mining dock leaves, (40) 859. 

 spp., notes, (29) 454. 

 vicina in North America, (35) 759. 

 vicina, notes, (28) 752. 



Pelagophycus porra, analyses, (27) 421. 

 Pelargonin, studies, (34) 709. 

 Pelargonium — 



bacterial disease of (32) 53. 



canker, notes, (34) 56. 



disease, new, (38) 152. 



poisoning by certain elements, (38) 628. 



scarlet, coloring matter of, (34) 709. 

 Pelargoniums- 

 breeding experiments, (27) 741. 



coloring matter, (27) 228. 



notes, (29) 341. 

 Pelatachina pellucida, notes, (37) 763. 

 Pellagra- 

 alkali reserve of blood in, (39) 671. 



and the vitamin hypothesis, (40) 70. 



cause and prevention, (32) 255; (34) 764. 



central nervous system in, (35) 560. 



colloidal silica theory, (36) 763. 



dietary treatment, (35) 666. 



etiology, (32) 67; (33) 662. 



experimental, in dogs, (36) 764. 



human-like, in dogs, (38) 366. 



in Italy, notes, (27) 568. 



in Province of Rome, (31) 859. 



nature and prevention, (39) 70. 



photodynamic theory of, (26) 871. 



prevention, (34) 259, 764; (3,5) 472. 



problem in Illinois, (28) 560. 



producing diets, (39) 266, 665, 666; (40) 69. 



relation to^ 



corn, (26) 486; (29) 175. 



corn meal, (29) 768. 



deficiencies in diet, (30) 764. 



diet, (26) 263; (33) 464, 565; (34) 258, 259, 764; 



(35) 560, 767; (36) 763; (38) 268, 568. 

 insects, (27) 156; (28) 853; (33) 555. 

 location of domicile, (33) 565. 

 sand-flies, (26) 656; (29) 357; (31) 455. 

 sewage disposal, (31) 893; (37) 694. 

 Simulium, (31) 452. 

 stable flies, (29) 756. 



review of investigations, (34) 463; (36) 363. 



similarity to zeism, (31) 464. 



studies, (30) 865; (31) 858; (33) 167; (35) 666; (36) 

 464, 466; (40) 69, 363, 869. 



summary and digest of data, (36) 161. 



transmissibility, (36) 363. 



transmission experiments, (36) 764. 



treatise, (36) 763. 



treatment, (32) 255, 564. 

 Pelletierine tannate as a vermifuge, (38) 884. 

 Pellicularia— 



disease of coffee, (40) 48. 



koleroga, notes, (32) 645. 



koleroga on coflee, studies, (31) 450. 



koleroga, studies, (33) 549. 

 Peloria in flowers, (34) 823. 

 Peltophorum africanum, analyses and digestibility, 



(27) 871; (32) 167. 

 Pempheres afllnis, notes, (40) 553. 

 Pemphigidae of Japan, (38) 857. 

 Pemphiginae affecting Populus in Colorado, (31) 



351. 

 Pemphigus— 



acerifolii, notes, (35) 54. 



betae, see Beet aphis and Sugar beet root louse. 



bursarius, notes, (27) 552. 



fraxini-dipetalae on olive, (38) 157. 



gravicornis n.sp., description, (29) 654. 



imbricator, notes, (26) 147. 



lactucarius, notes, (28) 655. 



populi-transversus, studies, (40) 60. 



spp., notes, (27) 257. 



tessellata (acerifolii), notes, (26) 753. 

 Pemphredon, nearctic species, (38) 660. 

 Penguin guano from Falkland Islands, (31) 622. 

 Penicillaria, culture experiments, (33) 33. 

 Penicillic acid, formation, (29) 7. 

 Penicillium — 



ammonifying power, (32) 29. 



avellaneum n.sp., description, (35) 148. 



camembertii, secretion of diastase by, (36) 328. 



casei, notes, (26) 479. 



chrysogenum as affecting butter, (39) 785. 



chrysogenum, proteolytic activity, (40) 721. 



conidium production in, (32) 442. 



crustaceum, notes, (28) 562. 



crustaceum, resistance to toxic substances, (29) 

 734. 



crustaceum, utilization of phytin by, (30) 805. 



