200 



EXPERIMENT STATION RECORD. 



l)arts of the province, made during the year, are reported, and the 

 results are discussed in connection with those of analyses in previous 

 years (67 in all). The percentages of nitrogen found are of special 

 interest. These vary from 0.009 to 0.457, the average for the 67 analy- 

 ses being 0.13. These results prove the error of the statements as to 

 the great richness of tropical soil in nitrogen. The amounts of humus 

 present were not large, and it was found by direct experiment that the 

 soils of Sao Paulo are generally benefited by nitrogenous manuring. 



Chemical examination of samples of soil from Norrbotten 

 marshes, Sweden, M. Kuuin {Ki/L Landt. Alad. Handl. Tulslr., 33 

 {1894), pj). 3-13). — Complete analyses are given of 9 samples of soil from 

 marsh lauds in northern Sweden, with the specific weight of the sam- 

 ples and the weight of organic matter, water, ash constituents, and 

 nitrogen per hectare 20 cm. deej). The main results of the analyses 

 are condensed in the following table : 



Analyses of soil from Swedish marsh lands. 



The author is of opinion that the soils examined would be improved 

 in most cases by applications of quicklime at the rate of 1 to 2 tons per 

 acre, or of carbonate of lime, and of about 90 lbs. of j)otash in the form 

 of high grade muriate. — p. w. woll. 



On certain final geological and climatic phases of Barbary soils, A. Pomel 

 (Compt. liend., 119 {1S04). X<>. ">. pp. :'n4-.',lS). 



Investigations concerning the heat capacity of soil constituents, R. Ulrich 

 {Forsch. Geh. agr. J'hys., ;?7 {1S94), No. 1 and:!, pp. 1-31). 



On the organic compounds of humus soil, G. Andr6 {Bui. Sac. Chim. Paris, 

 11-12 {lf^fi4), No. 15, pp. 771-7S1).—Hee E. S. R., 4, p. 859. 



Recent researche.* on the microorganisms of the soil which fix nitrogen, 

 Berthelot {Bui. Sor. Chim. raris, 11-1? {1894), No. l.'>, pp. 784-793).— ^ee E. S. R., 

 4. p. 854. 



Soil inoculation for leguminous plants, F. Xobbe and L. Hiltner {Fiihlintfs 

 laudw. ZUj., 43 {1S94), No. li, pp. 371-376). — A "general discussion with brief refer- 

 ences to experiments made by the authors iu 1890, 1891, and 1893. 



