1919] FIELD CROPS. 828 



is concluded that the treatment with pure culture was fully as effective as the 

 use of soil from a field having produced lupines successfully. 



A similar test with vetch, but including an additional culture known as 

 Asotogen and with only two pots treated with Inoculating soil, resulted In the 

 following average yields per pot of air dry substance for the different seri> 

 I 'ninoculated 9.7 gm., inoculated with soil 31 gm., Barthel'e culture .".4.3 gm., 

 Azotogen 18.7 gm., and nitrate of soda 26 gm. The average Increase in nitro- 

 gen taken op by the plants as compared with the average for the check pots 

 was as follows: Inoculated with soil 540.2 mg., Barthel'e culture '"-TJ.'J nig., 

 Azotogen 2S9.1 mg., and nitrate of soda 72.3 mg. In the pots receiving nitrate 

 of soda all roots were entirely free from nodules. It is point' d out that In 

 both experiments Barthel's culture proved fully equal to inoculating soil In 

 effectiveness. 



Cereal improvement at Svalof, W. J. Pkofkit (Scot. Jour. Agr., 1 (1918\ 

 4. pp. JfO.'t-Jfl'f). — This comprises a general discussion of the origin and purpose 

 of the Swedish Seed Association and of the methods employed at Sval 

 the improvement of the cereals. 



[Tropical grasses as paper-making materials] (Bui. Imp. Inst. [So. Km- 

 Hngton], 16 (WIS), Kos. 2, pp. 127-1S4; S, pp. 271-275).— Brief notes are pre- 

 sented on observations made at the Imperial Institute regarding the relative 

 value for paper materials of some tropical grasses, including Sorghum hale- 

 pense, Andropogon buoliananU, A. dregcanus, A. auctus, and A. Mrtiflonu 

 semiberbia from South Africa; lalang grass (Impcrata arundinacca) from the 

 Federated Malay States; and bamboo grass from Australia. 



Handbook of Indian agriculture, N. G. Mukerji (Calcutta: Thocker, Spink 

 d Co., 1915, 3. ed., rev., pp. XIV+620, pi. 1, fins. 118).— This is a third and re- 

 vised edition of a work designed as a textbook on Indian agriculture for the 

 use of advanced students, and embraces chapters on soils, crops, cattle, ma- 

 nures, insect and fungus pests, implements, methods of analysis, and Indian 

 famines. 



Dry farming: A system of agriculture for countries under a low rainfall, 

 J. A. Widtsoe, trans, by G. Rossati ("Dry farming." Sistcma di Agricottura 

 per le Regioni dalle Pioggie Scarse. Rome: Min. delle Colonic. VJ17, pp. 6 

 figs. 109, pis. S). — This is a translation into Italian of a work previously noted 

 (E. S. R-, 25, p. 31). 



Report of the committee on standardization of field experiments, A. T. 

 Wiancko, F. S. Harris, and S. C. Salmon (Jour. Amer. 8oo. Agron., 10 (1918), 

 No. 9, pp. 845-354).— Supplementing a previous report (E. S. R., 89, p. 828), the 

 committee of the American Society of Agronomy on the standardisation 

 field experiments presents a brief discussion of information obtained from 

 questionnaires, dealing with the size, shape, and arrangement of plats em- 

 ployed in soil fertility and crop investigations and frith the use and man:: 

 ment of check plats, which were sent to workers along these lines in the 

 periment stations throughout the United States. No definite conclusions have 

 been reached. 



Additions to the bibliography previously noted include 49 tin 



[Report of field crops work in Hawaii], L, A. IIknkk (Cnl. Hawaii liul. 5 

 (1918), pp. 2-18, figs. 2).— This comprises the first annual report of the Depart- 

 ment of Agriculture, College of Hawaii, Including brief notes oo variety b 

 with alfalfa, corn, peanuts, dry land rice, sorghums for D and sugar 



cane; cultural tests with cowpeas and Sudan grass: and experiments on the 

 eradication of nut-grass (Cypcrus rotundus) for the year ended Juno 30, 191& 



[Report of work at the Rothamsted Experiment Station. 1914-1917] 

 (Rothamstcd Expt. Sta., Earpenden, Ann. Rpt. 1914, pp. 42; Rpt- t915-1917, pp. 



