SUBJECT INDEX 



327 



Larch- 

 American, cambium development in, (29) 343. 

 cambial activity, C37; 127. 

 canker, notes, (.32; 544, 844. 

 canker, occurrence on pines, (30) 248. 

 case bearer, notes, (2«; r,T, f32} 448. 

 case bearer, remedies, (.33) 859. 

 case bearer, studies, C28) 857. 

 Chermes, studies, (40) 262. 

 defoliated, growth in, (29) 643. 

 European, drought resistance, (38) 44. 

 form variations, (39; 352. 

 insects of bark and wood, (40) 453. 

 leaf disease, notes, (34) 849. 

 longicom beetle affecting, (32) 155. 

 mistletoe, injurious effects, (34) 547. 

 moth, remedies, (33) 859. 

 needle cast, notes, (30; .545. 

 needles, drying, notes, (29) 156. 

 plantations in Ireland, (31) 240; (33) 542. 

 Razoumofskya infection, (40) 253. 

 roller, gray, notes, (30) 550. 

 sawfly — 



fungus parasite of, (26) 63. 



large, biology and remedies, (28) 658. 



large, chalcidid parasite of, (26) 353. 



large, notes, (27) 53, 460, 552; (30) 362; (32) 

 754. 



large, parasites of, (32) 352. 



notes, (28) 653; (29) 252; (30) 845; (38) 267. 



studies, (35) 54. 

 seedlings, absorption of fertilizers by, (26) 443. 

 seeds, germination tests, (27) 444. 

 stands, effect on soil physics, (26) 140. 

 timber, tests of strength, (28) 744. 

 volume tables, (39; 246. 

 western — 



analyses, (38) 309. 



description and use, (35) 451. 



galactan of, (35) 611. 



growth and adaptation. (36) 144. 



properties and uses. (29; 43. 



volume tables for, (34) 641. 

 witches' broom on, (36) 453. 

 Lard — 



adulteration, (31) 161. 



adulteration, detection, (27) 716; (29) 798; (32) 



802. 

 analyses, (31) 357. 

 and milk fat, comparative value for growth, (36) 



160. 

 as affected by feeding stuffs, (32) 21; (40) 772. 

 as affected by peanuts, (37) 367. 

 detection of foreign fats in, (39) 805. 

 digestibility, (34) 364, 659; (40) 268. 

 examination, (28) 65 

 failure to promote growth, (33) 263. 

 notes, (27; 365. 

 preparation, (35) 317. 

 preservatives, detection, (31) 508. 

 production in United States, (40) 614. 

 refractive index, (27; 615. 

 role in glycogen formation, (31) 763. 

 short-weight packages, (26) 461. 

 stearin, refractive index, (27) 615. 

 substitute in Austria, (29) 564. 

 substitute, metallic nickel in, (29) 459. 

 substitutes accessory growth substance in, (38) 



265. 

 substitutes for, (33) 660. 

 supply in United States, (38) 866. 

 water content, determination, (26) 207. 

 Laria— se« aUo Bruchus. 



rufimana, studies, (27) 563. 

 lisrk— 



Cahfomia homed, destruction of locusts by, 



(28) 351. 

 western meadow, destruction of locusts by, 



(28) 351. 

 western meadow, feeding habits, (28) 351. 

 Larkspur— 



anthocyan of. (34) 709. 



description, (32; 474. 



notes, (32) 778. 



of Wyoming, analyses, (30) 577. 



poisoning of Uvestock by, (27) 180; (29) 280; (35) 



779; (39; 386, 587, 787, 788. 

 seed fluid extract, insecticidal value, (32) 66. 

 tall, eradication, (38) 82. 

 Lams franklini, notes, (27) 355. 



Larus hyperboreus, subspecies of, (40) 254. 

 Larvae, rearing, (34) 651. 

 Larvicides, tests, (26) 5.59. 

 Laryngo-tracheal catarrh in horses, (34) 480. 

 Lasconotus, revision, (27) 259. 

 Lasia globosa injurious to alfalfa, (33) 656. 

 Lasiocampidae of Japan, (39) 262. 

 Lasioderma serricome, »ee Cigarette beetle. 

 Lasioderma sp., notes, (26) 560. 

 Lasiodiplodia— 



nonvalidity of genus, (31) 445; (34) 242. 



theobromae, notes, (29; 155, 345; (30) 50; (35) 

 45; (.37) 452, 553; (40; 155, 2.52. 



triflorae n.sp., studies, (34) 748. 



tubericola, description, (30) 150. 



tubericola, studies, (34; 242. 

 Lasiophthicus pyrasti — 



destructive to citrus plant lice, (26) 755. 



parasitic on rose aphis, (31) 250. 

 Lasioptera— 



fructuaria n.sp., description, (34) 852. 



vitis, notes, (37) 255. 

 Lasiopteriariae, studies, (40) 163. 

 Lasiosina n.spp., descriptions, (40) 263. 

 Lasiosphaeria culmorum n.sp., studies, (27; 154. 

 Lasiostroma pirorum, notes, (26) 449. 

 Lasius— 



(Acanthomyops) interjectus, remedies, (34; 62. 



niger americanus, life history, (29) 860. 



niger americanus, studies, (30) 546. 

 Laspeyresia— «ee aUo Grapholitha. 



caryana, notes, (38; 256, 762; (39) 557. 



caryana, studies, (38) 157. 



interstinctana, see Clover seed caterpillar. 



molesta — 



brief account, (40) 652. 

 description, (36) 358. 

 in Maryland, f38) 154. 

 studies, (39) 2.59, 260; (40) 756. 

 summary of information, (39) 761. 



pomonella, see Codling moth. 



prunivora, notes, (40) 756. 



strobilella, notes, (31) 849. 

 Lassen Peak, eruption of, (36) 419. 

 Latania scale, notes, (28) 854. 

 Laterite — 



as sewage filtering material, (28) 789. 



formation and composition, (31; 119. 



formation in soils, (30; 320. 

 Lateritization of soils under arid climates, (28) 812. 

 Latemea columnata— 



notes, (39) 30. 



on sugar cane, (40) 157. 

 Latex — 



hydrometer, use, (32; 48. 



of rubber plants, physiology of, (31) 128. 



physiological studies, (32; 328. 

 Latexes, caoutchouc-bearing, constitution, (27; 244. 

 Lath- 

 industry in Canada, (26) 544; (28) 044; (30; 46; 

 (32) 841; (35) 347; (36) 244; (37) 245; (38) 146. 



industry in United States, (30) 845. 



production in 1915, (37; 148. 



production in 1916, (39; 452. 



production in 1917, (40; 843. 

 Latheticus oryzae, studies, (37; 356. 

 Lathromeroides neomexicanus n.sp., description, 



(34) 556. 

 Lathyrus — 



culture experiments, (28) 633. 



sativus— 



anatomical structure, (31) 314. 



for pigs, (28; 364. 



poisoning of horses by, (35) 282. 



spp., culture experiments, (28) 532. 



sylvestris, yields, (30; 134. 



tingitanus as green manure, (39) 31. 



tingitanus, culture experiments, (30) 632. 

 Latitude — 



annual variation of, (35) 619. 



effect on forest development, (30) 45. 

 Latreillimyia bifasciata, notes, (26) 856. 

 Latrodectus mactans, notes, (38) 566. 

 Laundering — 



home, aids in, (29) 792. 



suggestions for, (33) 495. 

 Laundries, equipping, (28; 461. 

 Laundry- 

 cooperative, (30) 395; (35) 191. 



machinery and equipment, notes, (27; 793. 



