618 EXPERIMENT STATION BECOED. 



Agr. Intel, and Plant Diseases, 1911, No. 3, p. 503). — This is a discussion of 

 various means of preventing or mitigating the effects of frosts, wet and dry 

 spells, and excessive snowfall. 



Field ventilation, a new method of preservation against spring frosts, 

 F. Chaveenac {Prog. Agr. et Vit. {Ed. VEst-Centre), 32 {1911), No. 1, pp. 

 211-213; ahs. in Intertiat. Inst. Agr. [Rome], Bui. Bur. Agr. Intel, and Plant 

 Diseases, 1911, No. 3, p. 50Jf). — The author proposes the installation of electric 

 ventilators to create currents of air to increase the effect of smudges in pre- 

 venting frosts in vineyards and orchards. 



The constitution of water, J. Duclaux {Compt. Rend. Acad. Sci. [Paris]. 

 152 (1911), No. 21, irp. 1387-1390).— This article deals with certain anomalies 

 in the physical properties of water, particularly the increase of volume at the 

 freezing point. This phenomenon is attributed to polymerization. 



Progress in the chemistry of water, C. Blacker {Chenv. Ztg., 35 {1911), 

 Nos. J,0, pp. 353, 35',; U, PP. 370-372; 43, pp. 390-392; J,J,, pp. 398, 399).— This 

 is a critical review of the more recent investigations on the constitution of 

 water, water analysis, judging water, behavior of water in steam boilers, 

 purification of water, and metallic corrosion by water. 



The chemical composition and biological properties of water, J. Konig, 

 J. KuHLMANN, and A. Thienemann {Landxc. Jahrl)., 40 {1911), No. S-Jf, pp. 

 ^09--'i7.'i, pis. It, figs. 7). — This article reports studies of the effect on the 

 physical and chemical properties and on the natural flora and fauna of water 

 of the addition of various inorganic and organic substances. There was found 

 to be a relation between the chemical composition and biological properties of 

 water, and it is concluded, therefore, that both chemical and biological exami- 

 nations are necessary in judging as to contamination. 



Ground water level and cultivation, M. Ringelmann {Jour. Agr. Prat., n. 

 sser., 21 {1911), No. 17, pp. 525-528, pgs. 3). — This article discusses the inclina- 

 tion and depth of the water table in relation to plant growth and to methods of 

 cultivating, draining, and irrigating the soil. 



Wells, ]M. Ringelmann {Jour. Agr. Prat., n. ser., 21 {1911), Nos. 19, pp. 

 595-597, figs. 3; 20, pp. 623-625, figs. 2; 21, pp. 656, 657, figs. 3; 23, pp. 724-726, 

 figs. 2; 21,, pp. 752, 753, figs. 3; 25, pp. 782-78-',, figs. 2).— In continuation of 

 previous articles on the construction of wells, the author gives information 

 regarding the lining and curbing of wells, and discusses the feeding (main- 

 tenance of the water supply) of wells, ventilation of wells, temperature of 

 water in wells, composition of waters from different geological formations, and 

 'contamination of wells. 



Surface water supply of the Lower Mississippi basin, 1909, W, B. Free- 

 man and R. H. Bolster ( U. S. Geol. Snrvey, Water-Siipply Paper No. 267, pp. 99, 

 pis. 2, fig. 1). — This is a report of measurements of flow of water in this area, 

 including the drainage basins of the White, Arkansas, and Yazoo rivers. 



Surface water supply of the western Gulf of Mexico, 1909, W. B. Freeman 

 and R. H. Bolster {U. 8. Geol. Surveg. Water-Swpp^V Paper No. 268, pp. 107, 

 pis. 6). — This is a report of measurements of flow of water in this area, in- 

 cluding the Rio Grande drainage basiu. 



Geology and underground waters of northeastern Texas, C. H. Gordon 

 (U. 8. Geol. 8urvey, Water-8iipphj Paper No. 276, pp. 78, pis. 2, figs. 6).— 

 This is a report of a study of underground waters of an area of 5,989 square 

 miles, comprising the counties of Bowie. Red River, Lamar, Delta, Hopkins, 

 Franklin, Titus, Morris, Camp, and Cass. The geography, physiography, and 

 geology of the region are also briefly discussed. 



Ground water in Juab, Millard, and Iron counties, Utah, O. E. Meinzer 

 ([/. 8. Geol. Survey, Water-Supply Paper No. 277, pp. 162, pis, 5, figs, 13).— 



