964 



EXPERIMENT STATION RECORD. 



[Vol. 43 



Lands — Continued. 



waste, reclamation in India, 150. 

 (See also Reclamation.) 

 Laphygma — 



exipua on tobacco, 52. 



■fruoiperda. (See Army worm, fall.) 

 Larch — 



Chermes, life history, 54. 



growth as affected by locality, 748. 



seedlings, funtius attacking. 45). 



specie.s, comparative growth data, 4.". 



we.stem, growth measurements, 43. 

 Lard, vitamin A in, 764. 

 Laspeyresia — 



molesta. (Bee Peach moth, oriental.) 



nigricans, life history notes, 850. 

 Lath production in 1918, U.S.D.A., 150. 

 LathyriiH spp., chromosome number in, 632. 

 Laundering, home, methods and equipment, 



U.S.D.A., 792. 

 Lawn grasses for South China. 441. 

 Lawns — 



injury from mole crickets, 53. 



papers on. Wash., 197. 



spraying experiments, N.Y. State, 535. 

 Lead — 



action of water on, 279. 



arsenate, analyses, N.J., 37. 



arsenate, fungicidal value, Mass., 155. 



arisenate, insecticidal value, Colo., 

 158 ; Greg., 755. 



determination In cassia oil, 14. 

 Leaf blister mite, notes, 252. 

 Leafhoppers — 



on avocado, control, 255. 



on potato, relation to tipburn, 34."). 



transmitting curly top, duration of 

 virulence, 752. 

 Leather — 



chemistry, laboratory manual, 317. 



chemistry of, 617. 



harness, physical properties, 892. 



refuse, analyses, 28. 

 Leaves — 



anthocyanin in, localization, 327. 



carotin and xanthophyll content, 633. 



color changes in life course, 729. 



evergreen, changes in reserve ma- 

 terials, 29. 



penetral)ility for gases, 732. 



senile, changes in, 634. 

 Lebbra, new sumac disease in Italy, 49. 

 Lecanium n. spp., description, Mich., 6G0. 

 Leeks, root development, 834. 

 Legume diseases, 652. 

 Legumes — 



culture, Idaho, 738. 



effect of cold on, 432. 



flagellation of nodule organism, 4.";.'!. 



inoculation, Mont., 321 ; Wyo., 4;!6. 



inoculation with nitragin, 217. 

 (See also Nodule bacteria.) 



Insects affectinjr. 652. 



substitutes in Germany, 204. 



use as grasshopper bait, 353. 



(See also Green manures and Alfalfa. 

 Clover, etc.) 



Leguminosffi, root nodules of, comparative 



studies, 30. 

 Lemon — 



brown rot, notes, 243. 



juice, antiscorbutic value, 667. 



Juice, vitamins A and B in. 765. 



orchards, frost protection, U.S.D.A., 

 440. 



wither tip, notes, 243. 

 Lemons — 



bud variations, U.S.D.A., 440. 



pruned v. unpruned, 239. 



spraying experiments, 157. 

 Lf'pidoptera, forest, new species, 853. 

 Lepidosaphes ulmi. (See Oyster-shell scale.) 

 Leptinotarsa decemlhieata. (See Potato 



beetle, Colorado.) 

 Lcptocorisa varicornis, summary of infor- 

 mation, 556. 

 Leptosphwi'ia herpotrichoides — 



behavior of ascospores, 750. 



notes, 750. 

 Leptospira icterohamorrhaffiw. (See Spiro- 



chwta icte7-ohcemo>rhagice.) 

 Lcptus autumnalts, notes, 260. 

 Lettuce — 



analyses, 63. 



anthracnose, notes, 152. 



disease, greenhouse, Ky., 845. 



disease-resistant varieties, Md., 144. 



failure to head, cause, 446. 



iodin content, 204. 632. 



root development. 834. 



variety tests, Tex., 36. 

 Levulose and dextrose, ratio of utilization 



by plants, 730. 

 Lice — 



and nits, destruction, 453. 



bibliography, 51. 



book, control, U.S.D.A., 53. 



control, 852. 



determination of sex, 160. 



spermatogenesis. 256. 



sucking, monograph, 452. 



(See also Louse.) 

 Light — 



effect on action of stomata, 131. 



effect on fruit bud formation, N.n., SO. 



effect on plant growth, 431. 



effect on submerged cranberry bog, 836. 



(.SVe also Sunlight.) 

 Lilies, culture on Pacific Coasi, 746. 

 Lime — 



absorption by soils, method of deter- 

 mining, 27. 



agricultural, analyses, 520 : N..I., 326. 



and potash, analyses, 521, 031. 



arsenate. (See Calcium arsenate.) 



burnt, analj'ses, 521, 631. 



burnt, effect on organic matter in soil, 

 729. 



burnt, V. limestone. Can., 727. 



coarse-grained v. fine, 325. 



effect on soil extracts, Mich., 124. 



effect on tobacco root rot, 447. 



effect on soil potassium, 127. 



factor in soil improvement, 128. 



