522 EXPERIMENT STATION RECORD. 



141-ni'>; 1898, No. 33, pp. 141-169). — These reports record ol)servations on lijjrhtning 

 strokes, tlunidcrstornis, hailstorms, etc. 



The influence of forests on climate, J. Schubert ( Wetter, 17 {1900), p. 209). 



On the influence of forests on the temperature of the air, IMurrKicii (Meleor. 

 Ztxfhr. [Vinuiii'\, 17 (lUOO), p. 356). 



The climate of Sweden according- to Elcholm, Engel {GeocjrapMe, 1900, p. 

 199). 



The Manila observatory, J. Algue {Nat. Geogr. Mag., 11 {1900), No. 11, pp. 

 4^^7-438, tigs. 2). — An account of the history and work of this institution for meteor- 

 ological inquiries. 



AIR— WATER— SOILS. 

 Field operations of the Division of Soils, 1899, M. Whitney 



ET AL. ( f \ S. J),pt. A(jr. , R2'^- ^^'^^ PI'- ^^^1 P^-"'- ^'^9 ./'V''*- ^^^ ^'^^' 1IM])S 



11). — This is a report of progress by the Division of Soils in surveying, 

 investigating, and mapping the soils of the United States. It contains 

 the following papers: (1) A review of the operations of the year by the 

 Chief of the Division, which summarizes methods used and results 

 ol)tained; (2) a soil survey of the Pecos Valley, New Mexico, by T. H. 

 Means and F. D. Gardner, which has already been noted (E. S. R., 11, 

 p. 912); (3; a soil survey of Salt Lake Valley, Utah, by F. D. Gard- 

 ner and John Stewart, which has also been noted elsewhere (E. S. R. , 

 12, p. 317); (4) reconnoissances with reference to topography, soils, and 

 alkali of Sanpete, Cache, and Utah counties, Utah, and Cache a la 

 Poudre Valley, Colorado, by T. H. Means; (5) a soil survey in the Con- 

 necticut Valley, by C. W. Dorsey and J. A. Bonsteel, which treats of 

 th(^ clinuite. topography, geology, soils, and the culture of tobacco in 

 that valley; (6) application of the theory of solutions to the study of 

 soils, l)vF. K. Cameron; and (7) the method of mechanical analysis as 

 applied to alkali soils and the influence of salts (sodium chlorid, sul- 

 phate, and (carbonate) upon the rate of evaporation from soils, by L, J. 

 Briggs. 



Ai'eas aggregating aljout 720, 000 acres have l)een studied and mapped 

 (on a scale of 1 in. to the mile). The maps show the areas of the dif- 

 ferent kinds of soils found in the districts studied, and, for the arid 

 region, the alkali conditions (the distribution and relative intensity of 

 total alkali and of black alkali) and the depth to standing water. The 

 soil survey of the Connecticut Valley forms part of a general plan to 

 investigate and map the tobacco soils of the United States (PI S. R., 

 10, p. 531). 



"The map shows the distribution of the soiLs of the valley, whicli are described 

 with all necessary detail in the accompanying report. The sides of the valley are 

 formed for the most part from the glacial deposits of Triassic sandstone, and in the 

 northern part of diabase. The soils of the valley proper are sediments which have 

 been washed over and assorted in the great lake which is supposed to have covered 

 this area in prehistoric; times. iSomeof the soils occur in well-detined terraces, which 

 fcjrmcd tlie shores of the old lake, or which were formed subsequently by the river 

 and streams. Over much of the area, however, these terraces are ill-defined or 



