FIELD CROPS. 27 



gen and phosphoric acid the buyer does not pay as much now for plant food as 10 

 years ago, yet he pays more than at any time during the past 6 years." 



Experimeuts ill green nianiiring at Alnarp (S-wedeii), 1893 (Tichkr. Landtmiin, 

 15 (1S94), 2}p. 245, 246). 



Green manuring vs. stable manure, P. Wagxer (Brannsohw. landw. Zig., Q2 

 {1894), No. ^'0,2>p. SO, 90; No. 21, pp. 93, 94.) — A controversial article on the value of the 

 nitrogen in chemical I'ertilizcrs, in green manures, and instable manure. 



The use and value of poudrette, J. H. Vogel (Deut. landw. Presse, 21 (1SD4), 

 No. 44, pp. 434, 435.) — A popular paper on the fertilizing value of poudrette and the 

 couditions under which its use is advantageous. 



The value of peat for cleaning and disinfection, L. F. Nilson (Tidshr. 

 Lavdtman, 15 {1S94), i)p. 311-315, 329-333, 347-351). 



Phosphoric acid from different sources, Maercker ( Westpreuss. landw. Mitt.; 

 als. in I'Uhling's landw. Ztg., 43 {1S94), No. 10, pp. 317-321).— The agricultural value 

 of phosphoric acid in Thomas slag, superphosphate, bone meal, prepared phosphate 

 meal, and floats, as determined by experiments. 



Phosphatic fertilizers, Maizieres {U Engrais, 9 {1S94), No. 21, pp. 492, 493). 



Determination of the value of commercial potash, O. Bernheimer {Chem. Ztg., 

 IS {1894), No. 40, pp. 742, 743). 



Potash and soda for crops, P. Collier {Cultivator and Country Gentleman, 1S94, 

 Mag 31). 



Potash and soda, W. F. Massey {Southern Planter, 1894, June). 



Contributions from Alnarp laboratory (S'wedeii) : I, fertilizers and amend- 

 ments {Tidslr.Landtmdn, 15 {1894), pp. 227-232). 



Fertilizer inspection and analysis in North Carolina, H. B. Battle {N^orth Car- 

 olina Sla. Special Bui. 21, pj). 2). — Tabulated analyses and valuations of 15 brands of 

 fertilizers. 



Commercial fertilizers, H. A. Huston {Special Bui. Purdue University, Mag, 1894, 

 pp. 11). — Statistics are given of the fertilizer trade in Indiana in 1893, with com- 

 ments on changes in the character of the fertilizers sold in the State, data relating 

 to amount of plant food removed from the soil in different farm crops, illustrations 

 of the returns that can be secured from the use of fertilizers, notes on valuation 

 and on the conduct of the State fertilizer* control, and tabulated analyses of 247 

 brands of fertilizers legally on sale in Indiana, May, 1894. 



FIELD CROPS. 



The culture of barley for malting purposes, H. Scn.jERNrNa 

 ( UgesTcr. Landmiind, 39 {1894), pp. 146, 147), — The aiitlior, wlio is director 

 of tlie Vy Garlsberg chemical laboratory at Copenhagen, takesissue with 

 Sonne in his conclusions drawn from the culture experiments with bar- 

 ley conducted by the Danish Agricultural Society (B. S. E., 5, p. 716). 

 Looking at the qitestion from the brewer's standpoint, he says there 

 are only two factors to be considered in judging the malting properties 

 of a sample of barley, viz, its purity and its power of germination. 

 Under the former, color is to be noted, but is not of prime importance. 

 By far the most important factor for the malting is the germination. 

 If this is perfect the first condition of a good product and a good yield' 

 is at hand. 



The total nitrogen content and the mealiness can not, on the other 

 hand, be deemed of importance in considering this question. The 

 nitrogen in barley is present in various organic combinations of dif- 



