FERTILIZERS. 953 



improves the yield and (luality <>f the fora.ire, but inereases their j)h(»si)h()ric acid 

 content. 



Pot experiments with nitrogenous fertilizers in 1901, C. S. riiKLi-s [Coii- 

 m'cticut Storrs Sta. Rpf. 1901, pp. 154-164) ■ — This is a report of a continuation of 

 experiments carried on for several years (PI S. R., 13, p. 935). The results of jiot 

 experiments during 1901 with meadow fescue, Hungarian grass, barnyard millet, and 

 soy beans are reported in detail. "The purpose of the pot experiments was to study 

 the effects of nitrogenous fertilizers on the percentages of nitrogen and protein in 

 some of our common farm crops. In this respect they are similar to the field experi- 

 ments with nitrogenous fertilizers which tlie station has conducted during the past 12 

 years. . . . The results of the past 3 years' experiments indicate that our ci)mmon 

 grasses, such as orchard grass and meadow fescue, are greatly increased in the per- 

 centages of nitrogen and of protein by the nitrogen used as a fertilizer. Similar results 

 were obtained with Hungarian grass and millet. The only certsal that has been 

 grown in these experiments is oats. While the experiment has not been fully satis- 

 factory, the increase in percentage of protein was much larger where the larger quan- 

 tities of nitrogen were used as fertilizer. The only legume which has been successfully 

 grown is the soy bean. The seed of this plant was but little increased either in total 

 weight of crop or in the percentage of nitrogen by the nitrogen used as fertilizer." 



Nitrate of soda and sulphate of ammonia, L. Grandkau {Jour. Agr. Prat., 

 ». .sY/'.,.T {190.J), No. 10, pp. SOS, S09). — The relative fertilizing effect of these two 

 sources of nitrogen as indicated by experiments by Wagner and the author is dis- 

 cussed. Wagner's exjieriments, which have extended over a number of years, 

 indicate that the nitrogen of sulphate of ammonia is about 90 per cent as effective as 

 that of nitrate of soda. The author's experiments give considerably lower figures 

 for the nitrogen of sulphate of ammonia,. namely, 86 per cent, falling to SO per cent 

 in soils very poor in lime and to 63 per cent in soils very rich in lime. 



The action of 40 per cent potash salt and kainit on summer crops, II. Bach- 

 MANX {Ih'iii. L'tndtr. Frem', 30 {1903), No. 15, p. 120).— The results of the experi- 

 ments with various crops here reported indicate that when applied in the spring the 

 40 per cent salt was in the majority of cases somewliat sujterior to kainit, but that 

 the latter had a more lasting effect. With winter applications the kainit for the lat- 

 ter reason gave better results, especially on beets. At local market pric-es the kainit 

 was more economical than the 40 per cent salt. 



Top-dressing with potash on sandy soils, Bachmann {Fiihlin(fs Laiidw. Zig., 

 52 {1903), No. 3, pp. 102, 103). — Good results were obtained with rye even when 

 the top-dressing was delayed until the end of May. The results, however, were not 

 as good as when the potash salt was applied before seeding. 



Dried blood, E. M. Paget {Amer. Pert, 18 {1903), No. 2, pp. 5-7).— The details 

 of the preparation of this product are described. 



Concentrated tankage, E. M. Pa(;et {Amcr. Fert., IS {1903), No. 3, pp. 14-17, 

 fig.t. ;.^).— The methods of preparing this fertilizing material are discussed. 



Report of observations on the peat industry in Canada, J. (i. Thaui.ow 

 {Indheretning (Hii en med offentligt dvpendmm sommeren 1901 foretaget relse for at xdidcre 

 torvdrifl i Kawida m. fi. htnde. Vhrhtiania, 1902, pip. 26, ph. S). 



Report of observations on the peat industry in European countries, A. Dal 

 {Tndberetnuig om m relse somnwrcn 1901 for at ntudere torvdrifl I firskjcUigf rurojuriskc 

 Innde. Chrhtiamn, 1902, pp. 20, ph. 10). 



On the composition and use of flotsam, F. P. Bonuccelli {Slaz. tSpcr. Agr. 

 ItaJ., 36 {1903), No. 1, pp. .5-,^^).— The fertilizing value of the refuse (leaves and 

 similar n^aterial) which accunuilates at certain points along the banks of streams and 

 shores of other bodies of water is discussed and numerous analyses are reported. 



Analyses of commercial fertilizers, M. A. Scovell and II. E. Curtis {Ken- 



