508 EXPEKIMENT STATION KECOKD. 



Reduction of climatolog'ical elements, I, V. Laska (Sitzbcr. K. Bohm. Qesell. 

 M^iss. Main. Xatunr. CI., J'JlO, Art. XI, pp. 25, figs. 2).— This is a critical 

 study of methods of reduction of climatological elements. 



Bulletin of the Mount Weather Observatory {U. S. Dept. Agr., Bui, Mount 

 Weather Ohserv., Jf (1911), pt. 1, pp. 1-23, figs. 5). — This number contains the 

 following articles: Origin of the Permanent Ocean Highs (illus.), The Aleutian 

 and Icelandic Lows, Vertical Temperature Gradients and Convection Limits 

 (illus.), «nd Levels of Maximum and Minimum Cloudiness, by W. J. Hum- 

 phreys; and a Barometric Wave in Kansas (illus.). by T. B. Jeiuiings. 



Meteorological observations at the Massachusetts Agricultural Experi- 

 ment Station, J. E. Ustbander, C. M. Damon, and R. N. Hallo well (Masm- 

 chusetts Sta. Met. Buls. 269, 270, pp. 4 each). — Summaries of observations at 

 Amherst, Mass., on pressure, temperature, humidity, precipitation, wind, sun- 

 shine, cloudiness, and casual phenomena during May and June, 1911. The 

 data are briefly discussed in general notes on the weather of each mouth. 



Weather report, W. H. Day (Ann. lipt, Ontario Agr. Col. and Expt. Farm, 

 36 (,1910), pp. 4S-5//). — Observations during 1910 on temperature and precipi- 

 tation, as well as ou frost, wind movements, and damage by lightning, at rep- 

 resentative stations in different parts of Ontario are given in a series of tables. 



The weather of the past agricultural year, F. J. Brodie (Jour. Roy. Agr. 

 Soc. England, 11 (1910), pp. 358-363). — This is a brief account of weather con- 

 ditions in the United Kingdom during 1910, including tabulated data on rainfall, 

 temperature, and sunshine. 



Meteorological observations, 1901-1910, T. Mare (Meded. Procfstat. Java- 

 Siiikeriiulii.'i., 1911, Ao. 8, pp. 91-l.'i2, fig. 1, chart 1). — ^This article describes the 

 equipment used at the meteorological station at Passoeroean, Java, and sum- 

 marizes the results of observations at the station from 1901 to 1910, inclusive, 

 on pressure, temperature, sunshine, evaporation, cloudiness, rainfall, wind 

 Aelocity, and temperature of the soil for different depths. 



Climate of the coast and alluvial districts of Belgium, J. Massart (Rec. 

 Inst. Bot. L&} Errera Bruxelles, 7 (1908), pp. 208-255, figs. S).— The climatic 

 conditions of these districts of Belgium are discussed in their relation to the 

 distribution and adaptation of plants. 



Mountain snowfall observations and evaporation investigations in the 

 United States, F, H. Bigelow (U. S. Dept. Agr. Yearbook 1910, pp. Jf07-Jfl2, 

 pi. 1). — This article points out the scientific and practical importance of obser- 

 vations which are being made by the Weather Bureau on the snowfall in west- 

 ern mountain ranges in relation to water supply and on evaporation from lalies 

 and storage reservoirs, particularly at Reno, Nev., and on Salton Sea. The 

 methods employed in this work are briefly described. 



A note on the evaporation gradient in a woodlot, M. G. Dickey (Ohio Nat., 

 11 (1911), No. 7, pp. 3-'i7-349). — Observations on the evaporation at different 

 heights from the ground in a woodlot are reported, showing " that the greatest 

 evaporation has occurred in every case at the 6-foot level, pointing to a decrease 

 in relative humidity from below upward. The 35-foot reading exhibits a modi- 

 fication of this relation, which is due to the moisture given off in the transpira- 

 tion of the leaves in the forest crown." The data do not show a uniform in- 

 crease of the saturation deficiency from the lowest level upward. 



Depositional phases of eolation under the stimulus of aridity, C. R. Keyes 

 (Abs. in Science, n. ser., 33 (1911), No. 862, p. 29).— The following abstract is 

 here given of a paper read before the Iowa Academy of Science : 



*' It is now a question whether wind-scour under the stimulus of a typically 

 arid climate is not actually the most potent and persistent of all erosive agen- 

 cies. Under favorable conditions its general efficiency must greatly exceed that 



