294 SOIL SCIENCE [Bot. Absts., Vol. V, 



delphia, 1919.] Jour. Phys. Chem. 23: 443. 1919.— "Books like these are interesting and 

 worth while, but condensation seems to lead more often than necessary to inaccuracy of state- 

 ment." — Reviewer's summary. 



2251. Carles, P. La prune d'ente et les pruneaux d'Agen : Explication scientifique de leur 

 preparation et des moyen de les conserver temporairement pour l'Europe et de facon indefinie 

 pour 1'exportation mondiale. [A scientific account of methods used in preparing "prunes of 

 Agen" for foreign and domestic consumption.] Mem. Soc. Sci. Phys. Nat. Bordeaux VII. 

 2: 219-232. 1918.— See Bot. Absts. 5, Entry 1866. 



2252. Kopeloff, Nicholas. Micro-organisms in the sugar factory. Louisiana Planter 

 and Sugar Manufacturer 64: 14-15. 1920. — This is in continuation of the experiments pub- 

 lished in Louisiana Agric. Exp. Sta. Bull. 166. 1919. The results obtained in 1919 agree with 

 those of the previous year. In the sugar factory, the greatest number of molds and bacteria 

 is found in the raw juice. The clarification process reduces the number in the other sugar 

 products. — C. W. Edgerton. 



2253. Laborde, J. Recherches sur le vieillissement du vin. [Aging of wine.] Mem. Soc. 

 Sci. Phys. Nat. Bordeaux VII. 2: 37-75. 1918. 



2254. MacInnes, L. T., andH. H. Randell. Diary produce, factory premises and manu- 

 facturing processes: The application of scientific methods to their examination. Agric. Gaz. 

 New South Wales 31 : 255-264. 9 fig. 1920.— The authors give the results of an investigation 

 relative to the bacterial flora of dairy products at various stages of manufacture and of the 

 various substances with which the products come in contact, including the air of the butter 

 factory. Not only are plat counts given of the bacteria, yeasts, and molds, but a classifica- 

 tion is made relative to the physiological action of the various organisms. Suggestions are 

 also presented in regard to creamery methods. — L. R. Waldron. 



2255. Murray, Benjamin L. Standards and tests for reagent chemicals. 400 p. Van 

 Nostrand Co. : New York, 1920. 



2256. Seidell, Atherton. Solubilities of inorganic and organic compounds. 2nd ed. t 

 867 p. Van Nostrand Co. : New York, 1920. 



SOIL SCIENCE 



J. J. Skinner, Editor 

 F. M. Schertz, Assistant Editor 



ACIDITY AND LIMING 



2257. Bancroft, Wilder D. [Rev. of : Brideaux, E. B. R. The theory and use of indi- 

 cators. 22x13 cm. ix + 875p. D. Van Nostrand & Co. : New York, 1917. $5.00.] Jour. 

 Phys. Chem. 23: 203-204. 1919. 



2258. Corson, Geo. E. The use of lime on Iowa soils. Iowa Agric. Exp. Sta. Circ. 58. 

 7 p. 1919. 



2259. Fippin, Elmer O. The status of lime in soil improvement. Jour. Amer. Soc. Agron. 

 12: 117-124. 1920.— A general discussion of liming of soils.— F. M. Schertz. 



2260. Howard, L. P. The reaction of soil as influenced by the decomposition of green 

 manure. Soil Sci. 9: 27-39. 1920.— The lime requirements of land on which corn has grown 

 since 1894 but a part of which has for about 25 years grown rye or legumes shows that no 

 acidity has developed from the use of rye as a cover crop. The legumes, however, have during 



