MK'IK(U{(>F.(t(;Y \VATRI>. 811 



/7 I I'.iii'.i), \i>. I. /). /'/). Kcfcrriiij,' to tlu' above article, the author sufjfiests the 

 possibility of iisiii;,' this means for jtrotectii'ifr vineyards and crojis from daiiia;re 

 liy hailstorms. 



Bulletin of the Mount Weather Observatory ( (/. .S. Dvpt. If//., livl. Moiiiit 

 W rather Ohscn:. I (/.mS). pt. .',, pp. ^07-277 + 1\\ fign. J,, charts 6"). —This num- 

 Iter contains tlio following; articles: I'yrheli(mieter and Polarimeter Observations 

 (illus.), by II. II. Kimball: Recent Auroral Displays and Magnetic Disturbances, 

 l)y W. U. (Jregg: Magnetic De<"Iination, by E. 11. Miller and W. K. <!re.irg: and 

 I'pi'or Air Temiteratiu-es for Ainil, May, and .June (illus.). by W. IJ. r.lair. 



Monthly Weather Review (.l/o. Weather Rev., 30 {HWS), Aos. !), pp. 27.')- 

 32 'i, fifiK. 12, itiiirts 7; 10. pp. 32o-3')(l, figs. .), charts 7). — In addition to the 

 usual reports on forecasts, warnings, weather and crop conditions, meteorolog- 

 ical tables and charts for the months of Septeml)er and October, 1!X)S, recent 

 papers l)earing on meteorology and seismology, recent additions to the Weather 

 Knreau library, etc., these numbers contain the following articles and notes: 



No. 9. — Resume of Experiments in Aerodynamics, by A. F. Zahn ; Hythers 

 and the Comparison of Climates; The Relative Humidity of Our Houses in 

 Winter; Scientitic Hallooning and Weather Forecasts, l»y K. Uamler (trans. I>y 

 A. (J. McAdie) ; The Kite Station on Lake Constance (illus.), by E. Klein- 

 schmidt (trans, by C. F. Talman); The Itetlecting Power of Clouds (illus.); 

 I'^rly Meteorology at Harvard College, II, by B. M. Varney : (Jovernment 

 Meteorological Work in Hrazil (illus.), by R. DeC. Ward; Meteorology at the 

 American Association for the Advancement of Science; The Isothermal Layer 

 of the Atmosi)here; Damages by Flood at Kansas City, Mo.; The Scientific 

 .\spect of a Balloon Voyage (illus.), by II. II. Clayton; The Meteorological 

 Wttrk of the Iniversitj- of .Inrjev (Dorpat), Russia, by E. Rosenthal: Prize 

 otTered by the (ierman Meteorological Society: A California Cloudburst, by J. S. 

 Douglas; and A Mercurial l{arogra]ih of High Precision (illus.), by C. F. 

 Marvin. 



.\o. 1(>.— Detlecting Force Due to the Earth's Rotation, by R. A. Harris; Stu- 

 dies on tlu' \'orti<es of the .\tmosi»here of the Earth (illus.). by F. II. Bigelow: 

 .Notes on Weatlier and Climate made during a Snunner Trip to Brazil, 1008 

 (illns.), by R. DeC. Ward; Installation of Automatic River Stage Register at 

 Iliiriford, Conn, (iiliis. ), by W. \V. Neifert ; and The Meteorology of Mars, by 

 S. Xewconib. 



Meteorological observations at the Massachusetts Agricultural Experi- 

 ment Station, .F. E. Ohtkanukk and R. C. LiNimi.Ai) (Massachusetts Sta. Met. 

 liiils. .>.i'.). 2'iO, pp. 'i each). — Sunnnaries of observation on pressure, tempera- 

 ture, hnmidity. precipitation, wind, sunshine, clondincss, and casual phenomena 

 during November and December. 1!Mts, are pn'seiited. I'lie gcniTal character of 

 the weather of each month is brielly discussed, and the 1 >('((Mul)er bulletin 

 gives a summary f(U- the yeai". The priniii>al data in this sunnnary are as 

 follows: 



I'ressitri, reduced to freezing and sea levt'l (inches), — Maxiiniun, ."•(».s;{. Feb- 

 ruary It; ndnimnm, •Js.st!. .January S; mean, .■{(l.f>^l4. .!//■ teniperatKre. in groimd 

 slieller (degrees I'.). .Ma.xinium, ItC, .Inly 12; .Mininiuni. IL.'. February "> ; 

 mean. 4T.(!. //h»(/(//7//. - Mean dew-iMiint. ."is.."; mean relative hnmidity. T.">.*^. 

 /'/r(i/<i/(i/»o/(.— Total rainfall or melted snow, od.CS in.; nuinlter of d.-iys on 

 which 0.01 in. <»r more rain or melt«'d .snow fell, loi»: total snowfall. :\s.7, in. 



Weather. — Total cloudiness reimdnl by sun thermometer. 1.71 1 I is. or .".'.i 



P«'r cent; nnniber of clear days, I i:;. ISrit/ht sunshine. Smnhvv of hours re- 

 corded, li.74.'5, or (51 |ier cent. Wiml. Prevailing dirts-tion. west-.sonthwi'St ; 

 total uiovemenl. (».'5,.">71 miles; maximmn »laily inov«>ment, .")',»} ndles, February 2; 

 iniidmnm dally inovenu-nt, 10 miles, Octol)cr K!; maxndum pressure i>er stjuare 



