584 EXPERIMENT STATION RECORD. 



The sources and cost of fertilizing materials, C. E. Tiiokne, J. F. Hickman, 

 and W. .1. (tKEEN {Ohio Sta. Bid. 71, pp. 1G4-170). — A popular discussion of this 

 subject. 



The home-mixing of fertilizers, C. E. Thorxk, .1. F. Hickman, and W. J. Green 

 {Ohio Sta. Bid, 71, pp. 170-178). — "It is shown that persons may save from 30 to 50 

 per cent of the cost of their fertilizers by purchasing- the materials and mixing them 

 (when mixing is necessary) at home." Directions and formulas are given. 



A critical discussion of the more important methods of preserving manure, 

 F. Taukke {FidiUiufs Undw. Ztg., 45 {1896), No. 22, pp. 696-710). 



A nevy preservative for manure, Gerlach {Laridiv. Centbl. Posen, 24 {1896), No. 42, 

 p. 234). — An account is given of tests of a proprietary compound containing from 87 

 to 90 per cent of gypsum, 10 jier cent of crude acid (5 per cent sulphuric acid), and 

 1 to 3 per cent of soluble phosphoric acid. Used in the amount recommended the 

 preservative was not efl'ective, but was very expensive. 



The effect of lime in slag, W. Somerville {Agl. Gaz. {Loudon), 44 {1896), 

 Dec. 28, p. 567). 



Marl and marling, Heixrich {Mergcl und Mergeln. Berlin: Parey, 1896). 



Lime and marl, Tancre {Landtv. Wochenbl. Schles. Hoist., 46 {1896), No. 51, 

 pp. 735-740). 



Phosphatic fertilizers, L. Vandenbercii {Belg. Hort. et Agr.,S {1896), No. 34, pp. 

 375, 376). — A popular article. 



Ordinary vs. dried superphosphate, L. Decoux and L. Drumel {Ing. Agr. 

 Gemhloux,7 {1896), No. 4, p. 110; abs. in Chem. Ztg., 20 {1896), No, 102, Ilepert., p, 

 307). — In exi)erimeut8 on oats both gave a decided increase of both straw and grain. 

 The ordinary superphosphate gave as good results as the dried and was much cheaper. 



Field experiments with Thomas slag from different sources, E. Proskowktz 

 {Mitt. Ver.Ford. laiidw. J'ersucliswcaens. Oesterr., 11 {1896), No. 1, pp.36-39). — Theresults 

 of comparative tests of 3 samples of slag with different amounts of citrate-soluble 

 phosphoric acid on sugar beets, clover, and meadows show that the largest yields 

 were obtained where the' slags containing the greatest amount of citrate-soluble 

 phosi)horic acid were used. 



Manurial experiments in Staffordshire {Agl. Gaz. {London), 44 {1896), Dec. 28, 

 p. 567). 



Fertilizer analyses, E. C. Kedzie {Michigan Sta. Bid. 135, pp. 15). — The usual 

 explanatory notes, including the text of the fertilizer law, and tabulated analyses of 

 60 samples of fertilizers collected in Michigan in 1896. 



Analyses of fertilizers and fertilizing materials, M. B. Hardin {South Carolina 

 Sta. Pipt. 1895, pp. 54-58, 61-63). — Tabulated analyses of 16 samples of fertilizing 

 materials, including acid jihosphate, mineral phosphates, floats, cotton-seed meal, 

 cotton hull, muriate of potash, sulphate of potash, kainit, and wood ashes, and the 

 average composition in 1894 and 1895 of the acid phosphates with and without 

 potash, nitrogenous superphosphates, kaiuit, and cotton-seed meal examined by the 

 station. 



FIELD CROPS. 



On the relative growth of common sorrel (Rumex acetosella) 

 and clover upon an upland acid soil before and after liming, 



C. O. Flagg, H. J. Wheeler, aiicl G. M. Tucker {Rhode Island Sta. 

 Rpt. 1895^ 2)p. 193-199, figs, 4).— The 11 twentieth-acre plats discussed in 

 this article had annually received since 1890 equal amounts of potash and 

 phosphoric acid. Nitrogen had been applied in the form of nitrate of 

 soda, sulphate of ammonia, and dried blood in from one-third to full 

 applications. In 1893 the southern tliird of all the plats had been limed 

 at the rate of 2^ tons per acre. Corn had been grown on these plats 



