221 --- 



possible to draw any line and state an exact percentage of basic 

 lime in slag except in terms of a strictly defined method of de- 

 termining it. 



J. HUGHUES. Basic slag and potash for chalk land. - - (The 

 Field [London], 114, 1909) E. S. R., May 1910. 



Chemical examinations of 2 samples of soil from the Sussex 

 chalk downs, one of which had been fertilized with phosphatic slag 

 and potash and the other not so treated, are reported. The prin- 

 cipal difference indicated by the analysis was the higher percentage 

 of organic matter in the fertilized soil, and this is thought to explain 

 the fact that this soil was greatly benefited by the application of 

 a fertilizer like slag, containing a large amount of lime, when the 

 soil already contained a high percentage of this constituent. 



Manganese as a fertilizer (Mark Lane Express, 100 [1909], 

 n. 4042, p. 305; Phosphate, 18 [1909], n. 886, p. in). E. S. R., 

 Aug. 1909. 



Investigations on this subject by Javillier, Lecarme, and others 

 are referred to, and suggestions are made as to the best method 

 of applying manganese salts as a fertiliser. It is pointed out that 

 the salts should be used in highly diluted form, and to this end 

 it is advisable to mix them in pulverized form with chemicals or 

 barnyard manure in such quantities as to give 8.9 to 35.7 Ibs. of 

 manganese per acre (10 to 40 kgs per hectare). 



WILLIAM E. BEAR. Import of manures into Great Britain. 



Jour, of the R. Agric. Soc. of England, Vol. 70, 1909, pp. 151-163. 



Apart from nitrate of soda and guano, most of the manures 

 imported in Great Britain are raw materials for their manufacture. 

 Nearly all the nitrate of soda comes from Chile, though Germany 

 contributes a small quantity ; and Peru is the main source of our 

 supply of guano. Of basic slag we import very little, less than 

 10 ooo tons having been received in 1908. Bones for manufactur- 

 ing arrive from a great many countries, India and Argentina being 

 the only extensive contributors. The greatest shippers of phosphate 

 of lime and rock phosphate to this country are unspecified islands 

 in the Pacific and the United States, followed by Algeria, France, 

 Belgium and Dutch Colonies. Germany is by far the most impor- 

 tant contributor of unspecified manures, and particularly potash. 



