20 EXPERIMENT STATION RECORD. 



Application of mathematics in meteorology, F. II. Wicia.dw { J'liil. Soc Waali- 

 i)ii/in,i, lini. i.; {I'M.;), PI,. 2i5-2.^r>\. 



Handbook of climatology. I, General climatology, J. IIaxn, Inin.s. by R. 

 DkC Ward (.Ve/c )'<irk (ind London: The MuciulUtn Onnpami, l'JO.3, 2>}>. XIV -\-4S7, 

 ill:). — Til is is not only a translation bnt a revision of the Jiiost important part of 

 Ilann's well-known lf<iii(lhi(cli dcr KliiiKilo/n/jir. The matter has been hronght down 

 to dale and a lar<ier proportion of Anieriean examples inclnded. The changes and 

 additions have had the approval of Professor llanu. 



"The book is divided into two parts. Part 1 deals with the 'climatie factors,' 

 namely, temperature, moisture, cloudiness, precipitation, winds, pressure, evapora- 

 tion, composition of the atmosphere, and i)henological observations. Part 2 deals 

 with solar or mathematical climate, physical climate, the infiuence of land and 

 water on the distribution of temperature, the influence of continents upon Innnidity, 

 cloudiness, precipitation, and winds, the inlluence of ocean currents upon climate, 

 the influence of forests on climate, tlie mean temi)erature of pai-allels of latitude and 

 of the liemispheres, mountain climate, and iinally geologic and periodic changes of 

 climate. ' ' 



WATER-SOILS. 



Normal and polluted waters in Northeastern United States, M. O. Lei(;h- 



Tox {]\'(itcr Supph/ and Irrhj. J'(iperi<, U. S. (/col. Survey, No. 79, jj}). 192, figs. 17). — 

 "This pai)er is principally a review of the more readily available records, published 

 and mij)ul)lished, of examinations made of water supplies derived from streams in 

 the northeastern part of the United States, the principal streams examined being the 

 MerTimac, Connecticut, Ilousatonic, Delaware, and Ohio rivers, and the various 

 important branches of the latter in the States of Pennsylvania and Ohio. . . . The 

 paper forms one of a series of reports on examinations made as to the character 

 of the natural waters of the United States, and the pecuniary damage to municipal 

 water supply occasioned by city and industrial wastes." 



Waters, E. J. Russell and F. T. IIoldrook {Jour. tSouUiea.si. Agr. Col., Wge, 1903, 

 No. 12, pp. 143-153). — Analyses of a large number of samples of drinking water are 

 reported, with a brief discussion of tlie sources of contamination and means of detect- 

 ing an<l jireventing contamination. 



Pollution of well water, K. AN'titman {Zhrlir. Landtn. Vrrt^urhsir. Oesterr., 6 

 {100-1), No. 0, ])j). ."iSG-SOO, fig. 1 ). 



The water content of the soil on the forage plats of the Poltava experi- 

 ment field, S. T. Tketyakov {Piiclivoredenie [La Pedologic'], 4 {1902), Nofi. 3, pp. 

 219-234; 4, pp. 378-392). — On tlie basis of numerous observations made at the Poltava 

 field during a number of years, the author arrives at the following conclusions: (1) 

 The moisture of the soil under papilionaceous plants to a depth of 4. 66 ft. is lower by 

 O.o2 per cent than imder graminaceous plants. The reverse is true of the surface soil 

 to a dei)th of 2.',V.^ ft., i. e., the grass i)lats contained 0.44 per cent more water than 

 tliose bearing papilionaceous plants. These moisture conditions are ascribed to the 

 uneciual development of the root system of the 2 families of plants and to the 

 difference in their yields. (2) Separate representatives of the papilionaceous and 

 graminaceous families bear the same relation to the moisture of the soil as mixtures 

 of a number of representatives of each of the 2 families. (3) Alfalfa fields plowed 

 up during the fall, winter, or spring contain more moisture than those remaining 

 under the alfalfa. This increase is noticeable in the cro]) imir.ediately following and 

 also in the next. (4) The soil under alfalfa dries np 4 times as much as that under 

 the May fallow. (5) Under fallow as well as under cereals (summer and winter 

 wheats) the soil dries U]) less rapidly than under alfalfa over one year old. (6) The 

 moisture of the soil under alfalfa to a depth of 4.66 ft. is less than under f(jdder beets. 

 The greater the age of the alfalfa the greater is this difference. (7) The younger the 



