718 expekimp:nt station record. 



I'Dtiish salts gave improved yields in tlie gi'eater nuuibei' of the experiments. 

 \\'lien kainit and potassium clilorid were applied at rates furnishing the same 

 amount of potash the former gave slightly the better results. 



Manuring' the potato crop {Mark Lane Express, 103 (1910), No. J/OSO, p. 

 137). — The rectmimendations of various authorities on this subject are sum- 

 marized, including those based upon recent exi)eriments in Scotland with lime 

 nitrogen. 



The action of phonolite as a potash fertilizer, B. Tacke {lllus. Landw. 

 Ztf/.. 30 {1910), No. 3, pp. 13, l.'f). — Experiments on moor soils with potatoes, 

 oats, antl rye are reported, the results indicating that there is no advantage 

 under such conditions in substituting iihonolite for the ordinary potash salts. 



The value of the new silicate of potash fertilizer, T. Remy {lllus. Landw. 

 Ztg.. 30 (1910), Xos. (J, pp. 39-.'i2 ; 7, pp. .'/.S-.jO). — The results of experiments 

 with various crops on different kinds of soil indicate that while the phonolite 

 meal has a certain fertilizing value it is very difficultly available and is slowly 

 utilized by plants. 



On the occurrence of potash salts in foreign countries, II. Erdmann (Kuxen 

 Ztg., Ui (1910), No. 19. pp. 1-3). — Reference is made in this article to the occur- 

 rence of i)otash in the nitrate deposits of India and Chile, in the by-products of 

 salt manufacture in France and Russia, in the salt deposits of (Jalicia, and in 

 the alkali salts of Tibet. Mongolia, and southern California. 



New potash discoveries, T. J. Albert {Daily Cons, and Trade lipts. [U. S.], 

 1910, No. 3717, p. 5). — Attention is called to an announcement of the discovery 

 of deposits of potash salts in China. 



On what kinds of soil can Thomas slag be replaced by other phosphates? 

 B. Tacke (Hannover. Land u. Forstw. Ztg., 62 (1909), p. J/Ut; abs. in ZenfM. 

 Agr. Chem., 39 (1910), ]^o. 1, pp. 9-11). — Comparative tests of Thomas slag 

 and Algerian and Lahn phosphates on different kinds of soils are reported, the 

 general conclusion being that on acid humus soils containing from 0.05 to 0.1 

 per cent of free acid Thomas slag may be in-ofitably replaced by the insoluble 

 phosphates, the applications of the latter being increased about oue-fifth over 

 that of Thomas slag. 



The possibility of finding phosphate deposits in Australia, H. I. Jensen 

 {Agr. Gaz. {Tasmania}, 17 (1909), No. 12, pp. 279, 280; Amer. Pert., 32 {1910), 

 No. 5, pp. 7-10). — To aid prospectors and encourage the search for phosphate 

 deposits, the sources and types of phosphates and the geological conditions 

 under which deposits are likely to occur are briefly described with special ref- 

 erence to the possible occurrence of apatite, phosphorite bone beds, and guano 

 in Australia. 



A reconnaissance of the gypsum deposits of California, F. I^. Hess ( U. 8. 

 Geol. Survey Bui. Jfl3, pp. 37, pis. Ji, figs. 2). — This bulletin deals briefly with 

 the distribution, classification, and description of the deposits. It also con- 

 tains a note by G. Steiger on errors in the chemical analysis of gypsum due to 

 dehydration in the process of grinding. 



The use of manganese and uranium as fertilizers, J. Ray and G. Pradier 

 (Jour. Agr. Prat., n. ser., 18 (1909), No. 35, pp. 311, 312; abs. in Rev. Gen. 

 Chitn.., 13 (1910), No. 1, Repert., p. 32). — It is reported that the use of 

 manganese sulphate on apricots produced a more luxuriant vegetation and in- 

 creased the size of the fruits. The use of a very dilute solution of uranium 

 nitrate stimulated the growth of young cherry and pear trees, but was without 

 result on trees 5 to 6 years old. 



Commercial value of some waste products, F. B. Guthrie (Agr. Gaz. N. S. 

 Wales, 20 (1909), No. 11, pp. 966-968) .—This article gives analyses and dis- 



