522 EXPERIMENT STATION RECORD. 



not (iiily iiuiiiilaiiicd Imt iiirrcascs in loi'cst soils altlmiij,'li a larj;!' aiuount of 

 iiitrofitMi is used in fort'st j^i-owlli. 



The forest as a nitrogen collector, A. Cieslar (C'cnlbl. Gcsain. Forstiv., 35 

 (HXHI), \o. 2, PI). 89-92). — This article reviews iiivesti.tiations by Henry, Zeui])- 

 len and Iloth, and others, showlnjj; the accumuhitiou of nitrogen in forest soils. 



Saline soils, A. B. Larrainzak (/'y'.s/«c. A(jr. Cent. [Mexico] Bol. 10, pp. 2't). — 

 This is a summary of information on allcali soils. 



Louisiana swamp land reclamation, E. Wisner (.1/an/rs.' Rec., 56 (1910), 

 No. 26, pp. 119-121, figs. H). — The progress of swamp reclamation in Louisiana 

 as well as the use made of the reclaimed land is described. 



Agrology of Arg'entina, P. Lavenik (In Cciiso Agropccuario Naeional la 

 CaiKulcria y la Agricultura en 1908. Buenos Aires: Govt., 1909, vol. 3, pp. 

 153-231). — This report deals at some length with the comimsition, classification, 

 origin, and formation of the soils of Argentina. It is based ui)on examinations 

 of a large number of samples from different parts of the country, the results 

 of which are reported in detail. 



Some granite soils of New South Wales, H. I. Jensen {Agi: Uaz. N. &'. 

 Wales, 20 {1909), 'No. 12, pp. 1085-1093).— This is the first report on a series 

 of systematic studies of the relation existing between various rock formations 

 and the soils derived from them. 



It gives the results of chemical analyses with notes on general physical 

 characteristics of granite soils of the Bathurst, Bega, and Cowra districts 

 of New South Wales, which are taken as typical of the soils of the basic granite 

 areas. Analyses are also given of typical granites of Bathurst and Cowra, as 

 well as results of a study of the progressive stages of rock decomi)ositiou in 

 soils at different depths. 



The analyses show greater uniformity in composition in the soils of inland 

 areas than in those of the coastal area of Bega. The climate of the latter area 

 is more favorable to rock decomposition, and for this reason the soils of this 

 area are on the whole richer in iwtash than those of Bathurst and Cowra. 



The analyses show that the subsoil in granite areas is invariably richer in 

 mineral plant food, particularly potash, than the surface soil. The phosphoric 

 acid decreases slightly and the nitrogen considerably with the depth, but the 

 amounts of lime and potash are much larger in the subsoil. 



A comparison of the granite soils with those of other types showed that they 

 are not nearly so rich as many other soil types, as, for example, those derived 

 from limestone and basalt and those of the river bottoms. 



The granite soils are classified into two series, acid granites and basic 

 granites. The characteristic vegetation and the manurial requirements of these 

 two classes are discussed. 



Maintaining fertility in Asia, F. H. King {Country Gent., 75 {1910), No. 

 2913, pp. 53, 5Ji, figs. 4). — This article describes from personal observation the 

 methods followed in China. Korea, and Japan in the utilization of waste prod- 

 uts for the maintenance of soil fertility. It is shown how soils which have been 

 cropped for ages are maintained in a high state of fertility without the use of 

 commercial potash salts, phosphates, or nitrates. The nitrogen is maintained 

 by persistent and efhcient culture of leguminous plants, and the available 

 potash and phosphoric acid by the utilizatiton of wastes and treatment of the 

 soil which unlocks and recombines in highly available form the essential fer- 

 tilizing constituents. The careful methods which are used in the handling and 

 composting of manures of all kinds are especially described. 



Maintaining soil fertility in Japan, F. H. King (Orange Judcl Farmer. //S 

 (1910), No. J,, pp. 131, 132, fig. 1). — This article, which is based upon observa- 

 tions made during a recent visit by the author to Japan, shows how this 



