1917] METEOROLOGY. 419 



Monthly Weather Review (U. S. Mo. Weather Rev., 44 (1916), Nos. 0, pp. 

 499-545, pis. 12, figs. 7; 10, pp. 547-610, pis. 13, figs. 22).— In addition to weather 

 forecasts, river and flood observations, and seismological reports for September 

 and October, 1916; lists of additions to the Weather Bureau Library and of 

 recent papers on meteorology and seismology ; notes on the weather of the 

 months; solar and sky radiation measurements at Washington, D. C, during 

 September and October, 1916; condensed climatological summaries; and the 

 usual climatological tables and charts, these numbers contain the following 

 articles : 



No. 9. — Shadmg Effect of Wire Insect Cages (illus.), by H. H. Kimball (see 

 p. 455) ; Circumstantial Arc with a Black Band, by H. H. Martin; Atmospheric 

 Electrical Variations at Sunset and Sunrise, bj^ E. H. Nichols; Ionization of 

 the Upper Atmosphere, by W. F. G. Swann ; Ground Rainbows, by A. E. Heath ; 

 Temperature and Radiation of the Sun, by F. Biscoe ; Solar Corpuscular Rays, 

 by K. Birkeland ; Aurora of September 30, 1916, by H. C. Hunter and D. Man- 

 ning; The Probable Growing Season (illus.), by W. G. Reed (see p. 418) ; Cer- 

 tain Characteristics of the Winds at Mount Tamalpais, Cal. (illus.), by H. H. 

 Wright ; Rainfall on Days with Air Temperature Below the Freezing Point, by 

 S. Takayama ; Newtonian Constant of Gravitation as Affected by Temperature, 

 by P. E. Shaw; Gravitation and Temperature, by J. L [ armor ] ; Ice Crystal- 

 lizations from Aqueous Solutions, by R. Hartmann ; The Kata Thermometer 

 as a Measure of the Effect of Atmospheric Conditions on Bodily Comfort, by 

 C. E. A. AVinslow ; Ball Lightning on Puy de Dome, by E. Mathias ; Central 

 Observatory of Mexico Removed ; Cleveland Abbe, 183S-1916 ; Henrik Mohn, 

 1835-1916; Hurricane Tracks, 1912-1915, by R. H. Weightman; and Further 

 Data on the Tropical Storm of July 12-22, 1916, by H. C. Frankenfield. 



No. 10. — Additional Note on the High Haze of July and August, 1916, by 

 H. H. Kimball ; Elementary Notes on Least Squares, the Theory of Statistics 

 and Correlation, for Meteorology and Agriculture (illus.), by C. F. Marvin 

 (see below) ; Injury to Vegetation Resulting from Climatic Conditions, by G. P3. 

 Stone (see p. 431) ; Lassen Peak's Name; An Eruption of Lassen Peak (illus.), 

 by A. H. Palmer ; A New Method for Determining " g," the Acceleration Due 

 to Gravity, by H. Bell ; Indian Summer and PlimsoU's Mark ( illus. ) , by W. G. 

 Reed; Weather Insurance, by W. G. Reed (see p. 418) ; What is a "Geocol"? 

 and A Cyclone in Perspective (illus.). 



[Observations on aerology] (t7. S. Mo. Weather Rev., Sup. 3 (1916), pp. 67, 

 pis. 8, figs. 11 ) . — This supplement contains the following articles : Sounding 

 Balloon Ascensions at Fort Omaha, Nebr., May 8, 1915; Meteorological Obser- 

 vations on Board the U. S. Coast Guard Cutter Seneca, April to July, 1915; 

 The Drexel Aerological Station; and Free-air Data at Drexel Aerological Sta- 

 tion, October, November, and December, 1915. 



Elementary notes on least squares, the theory of statistics and correlation, 

 for meteorolcg'y and agriculture, C. F. Marvin (U. S. Mo. Wcdther Rev., 44 

 {1916), No. 10, pp. 551-569, figs. 18). — "An effort has been made in this paper 

 to outline in a general way the essential principles of the methods of least 

 squares and the theories of statistics and correlation, with reference to their 

 application in the analysis and presentation of climatic data and their utiliza- 

 tion in the solution of problems cf agricultural meterology. While a consider- 

 able knowledge of mathematics is essential to a complete mastery of all the 

 methods, processes, and relations, nevertheless an elementary knowledge and a 

 little study are sufficient to enable anyone to carry out the relatively simple 

 routine and systematized calculations that are necessary to bring out all the 



