794 EXPERIMENT STATION RECORD. 



The influence of geological-agronomical charting upon soil study, T. Woelfer 



(Fiihli>i,/'8 landw. ZUj., 44 {1805), No. 2, pp. 4i;-4U). 



Crops and fertilizers, v^ith reference to California soils and practice, E. W. 

 IIiLGARi) {('aUfornia Sta. lipt. 1893 (aid 1894, pp. 200-213).— k popular article discuBS- 

 ing the draft of diti'erent crops on the soil and means of restoring exhausted fertility. 



The relations of soils to climate, E. W. Hilgard (California Sta. Bpt. 1893 

 and 1S94, j>p. 100-139). — A i)artial and revised reprint of Bulletin 3 of the Weather 

 Bureau of this Department (E. S. E., 4, p. 276). 



Fig soils, M. E. Jaffa {California Sta. Rpt. 1893 and 1894, pp. 235-240).— k reprint 

 of an article published iu Bulletin 102 of tbe station (E. S. R., 5, p. 286). 



Oia the nitrogen contents of soil humus in the arid and humid regions, E. W. 

 HiLGAKi) and M. E. Jaffa {California Sta. Rpt. 1893 and 1894, pp. 66-70). — A reprint 

 of an article in Agl. Sci., 8 (1894), No. 4, pp. 165-171 (E. S. R., 6, p. 197). 



Analyses of alkali {California Sta. Rpt. 189S and 1894, pp. 149-156). — Reports of 

 examinations of 22 samples of alkali leacliiugs, crusts, and soils. 



Analysis of two Kentucky blue-grass soils, M. E. Jaffa {California Sta. lipt. 

 1893 and 1804, pp. 65, 66). — The results of analj'sis of 2 samples of Kentucky soils 

 sent out by the reporter on soils and ash of tbe Association of Official Agricultural 

 Chemists are tabulated and discussed. Attention is especially called to tbe high per- 

 centages of phosphoric acid, 0.71 and 0.40 per cent. The only soils having amounts 

 approaching these figures are tbe black waxy soils of Texas, with 0.59 per cent, and 

 basaltic soils of Montana, with 0.59 per cent. 



Analyses of rocks, clays, marls, etc. {California Sta. Rpt. 1893 and 1894, pp. 

 189-191). — Brief reports of analyses of marl and clay rock, calcareous rock, cement, 

 peat, borate of lime, and brine; and a list of minerals sent to the station for 

 examination. 



Analyses of soils {California Sta. Rpt. 1893 and 1804, pp. 47-61). — Mechanical analy- 

 ses and in most cases chemical analyses of 3 samples of soil from the Sierra Foothills, 

 7 from the Great Valley, and 4 from the Coast Range are tabulateil and discussed, 

 and lists of a large number of samples subjected to partial examination are given. 



Analyses of Malmesbury soils, C. F. Jukitz {Agl. Jour. Cape Colony, 8 {1895), 

 No. 4, pp. 76, 77). — A continuation of systematic determinations of water, organic 

 and volatile matter, chlorin, lime, potash, and phosphoric acid in the soils of Cape 

 Colony. For previous analyses of soils of the Durban and Koeberg districts see 

 same journal, Jan. 11, 1894, p. 5. Determinations of nitrogen are in progress and soil 

 maps and charts are in course of i)reparation. 



Progress in the culture of sandy soils in the last 15 years, B. ISIartiny and 

 A. Orth {Jahrb. dent, landw. Ges., 9 {1804), pp. 511-539). 



Reclaiming coast sands, C. B. McNaughton {Agl. Jour. Cape Colony, 8 {1805), No. 

 2, pp. 57-65, figs. 14; No. 3, 2>P- 57-50, figs. 6; No. 4, pp. 91-96, figs. 6).—Au account of 

 the methods used on the sand dunes of Gascouy, France. 



FERTILIZERS. 



Green manuring "with cowpeas and other crops {N'ew Jersey 



Stas. Rpt. 1893, pp. liG-150). — This article gives the plan of au experi- 

 ment for the improvement of light lauds by the use of crimson clover 

 and cowpeas, and a statement regarding the method of cultivating 

 cowpeas on a large scale in New Jersey. Cowpeas, following crimson 

 clover, yielded at the rate of 14,400 lbs, of green material ])er acre. 

 The vines contained 2,278.1 lbs. of organic dry matter, TO.G lbs. of 

 nitrogen, 17.3 lbs. of pliosplioric acid, and 50.4 lbs. of potash. The 

 roots on 1 acre weighed only 1,080 lbs. and contained 295.2 lbs. of 



