834 EXPERIMENT STATION RECORD. 



In 110 cases the potash in the complete fertilizers was in the form of 

 sulphate free from an excess of chlorids. 



"The retail selling price of the complete fertilizers varied from $15 to $45 a tori 

 and averaged $27.65. The retail cost of the separate ingredients unmixed averaged 

 $18.52 or $9.13 less than the selling price." 



On the occurrence of perchlorate in nitrate of soda and its 

 injurious effect upon the growth of cereals and sugar beets, A. 

 Zaharia (Bui. Soc. Set. Bucharest, 7, pp. 361-40H; abs. in (Jhem. Gentbl., 

 1898, II, N~o. 22, p. 1106). — The author gives a very complete review of 

 the literature of this subject and reports the results of 3 series of his 

 own experiments on the action of perchlorate on the germination and 

 growth of the more important agricultural plants. Experiments were 

 conducted both in the field and in vegetation pots. 



As a rule the germinative power of cereals sustained little or no 

 injury from the perchlorate, although in case of barley and oats treated 

 with concentrated solutions the development of the plantlet was 

 retarded. In case of beet seed, on the other hand, neither the germina- 

 tive power nor the growth of the plantlet was seriously interfered with 

 by the perchlorate solutions. It was found in general that nitrate of 

 soda containing 1.5 per cent of perchlorate had no injurious effect upon 

 wheat and barley. Small amounts of perchlorate were apparently 

 beneficial to beets. The growth of peas was retarded and the yield 

 decreased by perchlorate. 



Egyptian clay and salt, J. Golding (Bpt. on Experiments, Agr. 

 Dept. Univ. College, Nottingham, 1898, pp. i)_ — A brief account is given 

 of experiments on permanent meadow, barley, oats, and wheat with a 

 crude salt obtained by lixiviatiou of the nitrate- bearing clays which 

 occur in upper Egypt (E. S. E., 6, p. 510). The sample of salt used in 

 these experiments contained about 56 per cent of sodium nitrate, 31 per 

 cent sodium chlorid, and 9.5 per cent of sodium sulphate. The results 

 of the experiments indicate that the salt is '-worth quite as much per 

 unit of nitrogen as nitrate of soda imported from Chile, also that dress- 

 ings of li cwt. per acre are likely to produce good results, especially on 

 barley and pasture grass." 



On the fertilizing value of the nitrogen of fresh and old barnyard manure, M. 

 Maerckek (Agr. ('hem. Vers. Stat. Halle, 2 (lS98),p. 51). 



On green manuring, Rumker (Ueber GrUndiingung. Sehonberg-Berlin: F. Telge, 

 1S9S, pp. 48)- — This little pamphlet discusses the general principles of green manur- 

 ing and their application in the management of light and heavy soils. A brief bib- 

 liography of the. subject is appended. 



Notes upon garbage fertilizers, W. Freak (Pennsylvania Dept. Agr. Bpt. 1897, pp. 

 524-529). — Analysis of crematory ashes and garbage tankage, alone or mixed with 

 phosphates and sulphuric acid, are reported, and the fertilizing value of these sub- 

 stances is discussed. 



Fertilizers in the village, II. Fayet (Lcs engrais au village. Paris: Librairie 

 Larousse, 4. ed., pp. 8-\-20ff). — An elementary general treatise <>n fertilizers, designed 

 for small farmers iu Fiance. 



Naturally-occurring fertilizers, F. T. Shutt (Canada Expt. Forms Rpt. 1897, pp. 

 170-179). — Analyses, with notes on use as fertilizers, of 9 samples of swamp muck; 6 



