FIELD CKOPS. 143 



The threshing may be done with an ordinary grain separator by using 

 blank concaves. The yield in Kansas is from 10 to 20 bu. per acre, 

 and the cost of production varies from 40 to 55 cts. per bu. 



The feeding value of soy beans is discussed, and 5 tests with pigs 

 are briefly reported in which soy beans were compared with Katir corn 

 and corn meal. The experiments made show a saving by a mixed ration 

 with corn or Kalir corn in fattening hogs of from 13 to 37 per cent per 

 100 lbs. of gain. 



From the results of 10 years' experience at the station the author 

 concludes that the soy bean is a profitable crop for the Kansas farmer. 

 "It stands drought as well as Kafir corn or sorghum; it is not touched 

 by chinch bugs; the grain is a richer feed than linseed meal, and the 

 plant enriches the soil in which it is grown." 



Alfalfa, G. L. Clothier {Kansas State Bd. Agr. Quart. Ept. 1900, Mar. 31, pp. 7-39, 

 tigs. 11) . — The history, culture, and feeding value of the plant, compiled from the 

 work of the agricultural experiment stations are given. 



Distance experiment with corn, C. D. Smith {Michigan Sta. Rpt. 1S99, p. 58). — 

 In a test of growing corn in drills and hills in rows different distances apart, the best 

 results were obtained when the rows were fully 3^ ft. ajiart, "either in hills equally 

 distant or in continuous rows, the kernels being between 6 and 9 in. apart in the row," 



Cotton, K. Supp ( Tropenpflanzer, 4 {1900), No. 6, pp. «'65-^7e).— Statistics of growth 

 and manufacture of cotton, with colored maps showing area of world's production. 



Kafir corn, J. G. Haxey {Kansas State Bd. Agr. Quart. Rpt. 1900, Mar. 31, pj). 

 52-65, figs. 2). — History, cultural notes, and feeding value, compiled from various 

 sources. 



Culture of white lupines, P. P. Deherain and E. Demoussy {Ann. Agron., 26 

 ( 1900), No. 2, pp>. 57-77, figs. 4)- — White lupines were grown in pot and field experi- 

 ments on calcareous soils well supplied with mineral elements. The results are 

 given in detail and seem to demonstrate that without the presence of nodules on the 

 roots of these plants growth is feeble and uncertain and premature death is frequent. 

 At least 4 different sorts of bacteria form nodules on the roots of white lupines, but 

 not all are equally efficient in furnishing nitrogen to the plant. It is owing to this 

 difference in efficiency, rather than to the composition of the soil, that white lupines 

 do not flourish in different districts e(iually well. 



Tests of the value of seeds of first and second flowering, E. Gain {Sta. Agron. 

 Nancy, Bui. 2, 1900, pp. 42-46). — AVhite lupine seed were selected from pods of the 

 first and second flowering periods, respectively, and planted under similar conditions 

 of soil and culture. From 33 to 50 per cent of the seeds from the second flowering 

 failed to grow, and those that did live made a weak growth, the yield of pods and 

 seed and total weight of the plants being scarce 50 per cent of that of the seeds 

 obtained from the pods of the first flowering. Ordinarily the seeds of the different 

 flowering periods are all harvested together. The undesirability of using such mixed 

 seeds, as shown in this experiment, is conunented upon. 



Meadows of the lower course of the Saone, H. Cornet and E. Delokme {Ann. 

 Agron., 26 {1000), Nk 3, pp. 140-155). 



When and how potatoes were introduced into Norway, O. Olafsen {TidssJcr. 

 Norske Landhr., 6 {1S99), No. 11, pp. 504-506). 



Cultivation of the potato, A. C. Toxxelier {El cuUivo de la papa. Buenos Ayres: 

 J. Peuser, 1899, pp. 22). 



4740— No. 2 4 



