FERTILIZERS. 225 



" It was pointed out in the last report that the more tedious pepsin-digestion proc- 

 ess, which should be used as an adjunct to the modified permanganate method and 

 in all cases of doubt, does justice to vegetable anunoniates." 



Contribution to the kno-wledge of the injurious effect of nitrate 

 of soda on vegetation, J. Stoklasa {ZUclir. Landio. Versuchw. 

 Oidcn:, J {rJOO),p. 35; abs. in Chem. Ztg., 2^ {1900), No. 20, Eepert, 

 p. 65). — It was demonstrated by means of water cultures that rye is 

 nuich more sensitive to perchlorate than barley or wheat, and partic- 

 ularly sugar beets, the latter being- 10 times moi"e resistant than the 

 rye. In fact, it was found that copper and zinc sulphates and arsenic 

 were more poisonous to beets than potassium perchlorate. Five hun- 

 dred kilograms per hectare of nitrate of soda containing 2 per cent 

 perchlorate may be applied to sugar beets without appreciable injury. 

 For rye the limit is 100 kg. per hectare of 1 per cent perchlorate, 

 while for oats the nitrate may contain 1.5 per cent perchlorate, and for 

 wheat and barley 2 per cent. 



Fertilizers, E. Fulmer and W. H. Heileman ( Washingto)) Sta. 

 Bui. J-tO. pp. o'2). — A general discussion of the principles underlying 

 the use of fertilizers and of the sources and composition of fertilizers, 

 with the text of the fertilizer law passed by the legislature of Wash- 

 ington and approved March 8, 1899, This law puts the inspection of 

 fertilizers in charge of the chemist of the Washington Station, who is 

 created State chemist ex officio. The chemist is authorized to collect 

 samples, in person or by deputy, in the open market. An analj^sis 

 fee of f 6 for each fertilizing ingredient contained or claimed to exist 

 in the fertilizer oiJ'ered for sale is required, the fees being paid into 

 the treasury of the station. There is a provision against the use of 

 pulverized leather, raw, steamed, roasted, or in any form, without an 

 explicit statement of the fact. Violations of the law are punishable 

 by a fine of $50 for the first offense and $100 for each subsequent 

 offense. Fertilizers selling for less than $10 per ton are exempt. 



Sea alg'ae as fertilizers, C. Sorensen {Landmandsblad, 33 {1900), No. 8, pp. 

 10'.)-11,^) . 



Experiments w^ith urine and liquid manure, N. A. Hansen {Landmandsblad, 

 33 {1900), No. 7-S, pp. 77-79, 98-101). 



Local fertilizer experiments in Denmark and Germany, M. Weibull {Med- 

 dd. K. Landtbr. Stj/r., 1899, No. 11, pjp. 1-26). 



On the application of artificial fertilizers, F. H. Werenskiold (Norsk Land- 

 maiKhblad, 19 [WOO), No. 20, pp. 224-228). 



Analyses of commercial fertilizers and manurial substances, C. A. Goess- 

 MANN {MassadiuscUs Hatch Sta. Bid. 65, pp>. 14). — This bulletin gives instructions 

 regarding the sampling of fertilizers, discusses the trade values of fertilizing mate- 

 rials, and reports analyses of 62 samples of fertilizing materials, including wood 

 ashes, cotton-hull ashes, cotton-seed meal, tankage, sewage sludge, cork dust, kiln 

 dust from breweries, cotton waste, tobacco refuse, muck, soils, bone, and compound 

 fertilizers. 



8058— No. 3 3 



