1114 EXPERIMENT STATION RECORD. 



niid extreme values of the meteorological elements reeoi-ded in the city of Balti- 

 more. The discussion is based upon careful ol)ser\ations extending over u 

 period of nearly a century. The second part deals with types of weather experi- 

 enced in BiUtimore and vicinity — hence with the actual physical condition of 

 the atmosphere at stated times, during the prevalence of storms, cold and warm 

 waves, etc." 



Climatolog'y [of South Carolina], J. W. Bauer and E. J. Watson (Uaiulboo]: 

 of South Varolina. Columbia: State Dept. Agr., Com., and Immig., 1907, pp. 66- 

 76, figs. 2). — The climatological conditions and relations are summarized by the 

 director of the South Carolina section of the Weather Bureau of this Depart- 

 ment. 



A general summary of climatolog'ical conditions as related to agriculture 

 in Cuba, 1907, L. G. y Carbonell {BoL Ofic. Sec. Agr. Cuba, Jf (1908), No. 1, 

 pp. 30~.'/3, pis. 2). — Observations on temperatui'e, precipitation, cloudiness, and 

 wind at various stations in Cuba are tabulated and briefly discussed. 



Contribution to the climatology and hydrography of Central America, 

 A. Merz (Beitrage zur KJimatologie und Hydrographie Mittelamerikas. Leip- 

 sic, 1907, pp. 96, pis. 4; Mitt. Ver. Erdk. Leipzig, 1906, pp. 1-96, pis. .'i; rev. in 

 Mitt. Justus Perthes' Geogr. Anst., 53 (1907), A'o. 12, p. 235). — This report sum- 

 marizes the more important available data regarding temperature, rainfall, 

 cloudiness, and winds at different places in Central America, but especially in 

 Nicaragua, particular attention being given to the relation of rainfall, run-off, 

 and evaporation. The article is based in large part upon a report of A. P. 

 Davis on the hydrography of the Isthmus of Nicaragua (E. S. R., 14. p. 920). 



It is explained that for the i-egiou typically represented by San Juan, Nica- 

 ragua, the year is divided into a suuniier rainy season with maxima, one in 

 June and the other in October, and a dry season, which extends from January 

 to April. The total rainfall is as a rule quite high, particularly on the eastern 

 side of the mountains (0,48.3 mm. at San Juan), but varies widely with eleva- 

 tion and location with reference to the mountains, the west side of the moun- 

 tains being comparatively dry. The run-off varies v,-ith the rainfall and with 

 the forest cover. The greatest deficit in run-off occurs in the areas covered by 

 primeval forests, and is attributed to evaporation rather than to utilization of 

 the moisture by the forest growth. On the larger plains tlie evaporation 

 varies from about 1,000 to 1,100 mm., with rainfall of from 1,500 to 4,000 mm. 



Weather conditions in Denmark, 1906-7, Y. Willaume-Jantzen (Tidsskr. 

 lAindokonotn., 1907, No, 13, pp. 686-701). — The principal meteorological condi- 

 tions are summarized for each month. 



Observing and forecasting the weather, I). W. Horner (Loudon, 1907, pp. 

 46; rev. in Bird Notes [Brighton], 6 (1907), No. 8, pi). 2^9, 250).— This book- 

 let, intended for nature lovers, contains brief chapters on clouds, wind, halos 

 and kindred phenomena, thiniderstorms, weather sayings, the moon and the 

 weather, and phenological observations, dealing only with meteorological phe- 

 nomena which can be observed without instrumental aid. 



On the need of ground water observations, Krijger (Jahrb. Deut. Landio. 

 Gesell., 22 (1907), No. '/, pp. 778-789). — The need from the agricultural stand- 

 point of studying and charting the underground waters is discussed. 



Surface water supply of Colorado River drainage above Yuma and the 

 Great Basin drainage, 1906, E. I. Meeker, E. C. LaRue et al. (U. 8. Geol. 

 Survey, Watcr-Supply Papers Nos. 211, pp. 1J,9, pis. 2, figs. 2; 212, pp. IV-\-98, 

 pis. 2, figs. 2). — These reports contain information similar to that published in 

 previous years imder the title '* Report on the Progress of Stream Measure- 

 ments." 



