348 EXPERIMENT STATION RECORD. 



Preliminary report of the Cyanid Company of Berlin on its w^ork in the 

 preparation of cyanids and on the utilization of the nitrogen of the air for 

 fertilizing purposes (Ztsclir. Aikjcw. Clion., Pi {190.!), No. ,i,i, pp. 520-522). — The 

 article explains the i)rin('i])les and the development of the e()mi)any'.s processes of pre- 

 paring cyanamids and cyanids, first from ))arium carbid as proposed by Frank and 

 Caro, and later from calcium carbid as proposed by Pfleger; and also by direct treat- 

 ment of a mixture of calcium carbonate, coal, and atmospheric nitrogen in an electric 

 furnace. 



The fertilizing value of the cyanamid is briefly noted, and other commercial appli- 

 cations of the process, e. g., in preparing cyanids, etc., are explained. 



The preparation of alkali cyanids from calcium cyanamid, G. Erlweix 

 {Zt^chr. Aiigew. ('hem., 16 {190S), No. 2.)\ pp. 5S3-536; C'kem. Ztg., 27 {1908), No. 47, 

 p. 507). — This isa i)ai)er.read before the International Congress of Applied Chemistry 

 at Berlin, 1903, which reviews the history of the development of this process with 

 special reference to its commercial applications. 



The utilization of atmospheric nitrogen, F. Rothe {Ztschr. Angew. Chem., 16 

 {1903), No. 27, ]}p.658, 659). — The author claims in this article to have worked out 

 independently of Frank and Caro the processes involved in the fixing of free nitrogen 

 of the air by means of carbids of the alkaline earths or mixtures of carbonates of the 

 alkaline earths and carbon. 



Progress in the potash industry, M. Hagen {Chem. Ztg., 27 {1903), No. 60, 

 pp. 747-749). — A 1)rief review. 



Frosts and potash fertilizers, L. Dumas {Jour. Agr. Prat., n. ser., 6 {1903), No. 

 33, p. 226). — A brief note on a recent article by Couturier (E. S. R., 15, p. 236), in 

 which it is suggested that the effect of potassic fertilizers in increasing the resistance 

 of plants to frost is probably due to the greater vigor of plants so treated, and that 

 doubtless resistance to frost is accompanied by an equal power of resistance to fungus 

 diseases. 



Fertilizers, R. E. Rose and E. E. McLin {Mo. Bid. Florida Dept. Agr., 13 

 { 1903), No. 85, pp. 17-39). — The results of inspection under State law of a large num- 

 ber of samples of fertilizers are reported, with notes on valuation, average composition 

 of fertilizing materials, etc. 



Fertilizer inspection, C. D. Woods and J. M. Bartlett {Muive Sta. Bid. 94, pp- 

 93-103). — This bulletin gives the results of analyses of samples of commercial ferti- 

 lizers collected by a representative of the station. It also includes notes on valuation. 



Analysis of commercial fertilizers sold in Maryland, H. B. McDonnell etal. 

 {Maryland Agr. Col. Quart., 1903, No. 21, pp. 54). — The results of analyses of 489 

 samples of fertilizers examined from March to June, 1903, are reported. 



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

 MANN {Massachusetts Sta. Bui. 90, pp. 30). — Analyses are reported of 225 samples of 

 fertilizers collected in the course of regular fertilizer inspection during 1902, and of 

 77 samj^les of fertilizing materials sent to the station for examination, including wood 

 ashes, lime ashes, coal and wood ashes, tankage, ground bone, cotton-seed meal, nitrate 

 of soda, lime compounds, phosphatic slag, bat guano, horse manure, sheep manure and 

 wool waste, sugar beet refuse, cassava waste, compound fertilizers, and soils. 



Fertilizer analyses, F. W. Robison {Michigan Sta. Bui. 210, pp. 125-145). — The 

 results of the inspection of fertilizers during the spring of 1903 are reported with the 

 test of the Michigan fertilizer law, and a brief general discussion on the nature and 

 use of fertilizers. 



Analyses of commercial fertilizers {South Carolina Sta. Bui. 82, pp. 10). — This 

 bulletin reports analyses and valuations of 163 samples of fertilizers examined during 

 the season of 1902-3. 



Commercial fertilizers and commercial poisonous insecticides, H. H. 

 Harrington ( 7fe./as Sta. Bui. 67, jyp. 21-34). — "This bulletin contains a discussion 



