METEOROLOGY — CLIMATOLOGY. 



721 



in the rmdy of the rejiort and the detailed record in an appendix, 

 for 1899 is as follows: 



Summary of meteorological observations, 1899. 



The snmmary 



BurometiT (inches'): 



Menu 



Highest 



Lowest 



Temperature (°F.): 



Mean 



Highest 



Lowest 



Mean daily range 



Greatest daily range 



Least daily range - 



Mean daily relative humidity (per cent) 



Rainfall (inches): 



Total 



Greatest monthly 



Greatest daily 



Number of days on which 0.01 in. or more of rain fell 



Mean percenUvge of cloudiness 



Number of days on which cloudiness averaged 80 per cent pr more. 



Average hours of sunshine per day 



Maximum velocity of wind per hour (miles) 



Last frost in spring 



First frost in fall 



.50.051 



30.810 (.Ian. 2).. 

 29.330 (Dec. 24). 



49.1 



96 (Aug. 20) ... 

 -20 (Feb. 10).. 

 18 8 

 38' (Aug.' 17 )'!'.'. 



3 (Feb. 13) 



78.4 



34.87 



4.77 (May).... 

 1.60 (Aug. 26) 



1.27 



43.2 



75 



32 (Mar. 7). 



(trowing 



season 



(Apr.-Sept.). 



04. 



96 (Aug. 20). 

 21 (Ai)r. 3). 

 21.. 5. 



38 (Aug. 17). 



74.7 



17.03. 



1.00 (Aug. 26). 



00. 



35. 8. 



21. 



7h. Om. 



Apr. 17. 

 Sept. 30. 



Report of the meteorologist, N. Helme {Rhode Island Sta. Rpt. 1901, pp. 355- 

 871) . — This includes general notes on the weather during the year ended June 80, 

 1901, and a tabulated record of observations at Kingston on teinj)erature, precipita- 

 tion, cloudiness, and prevailing winds during each month from July, 1900, to June, 

 1901, inclusive, with a summary for the year ended June 30, 1901. The latter sum- 

 mary is as follows: 



Temperature (degrees F.). — Maximum, 97, August 11, 1900; minimum, —9, Jan- 

 uary 20, 1901; mean, 48.4; highest monthly mean, 71.6, July, 1900; lowest monthly 

 mean, 21.8, February, 1901; highest daily mean, 83, August 11, 1900; lowest daily 

 mean, 3.5, January 19, 1901. Precipitation (inches).— Total (rain and melted snow), 

 48.47; greatest monthly, 8.78, April, 1901; least monthly, 1.13, February, 1901; great- 

 est in 24 consecutive hours, 3.67, March 26-27, 1901; snowfall — total, 15|; greatest 

 monthly, 8, February; least monthly, |, December. Weatlier. — numberof clear days, 

 134; number of fair days, 97; number of cloudy days, 134; numberof days on which 

 there was precii)itation of 0.01 in. or more, 114. Prevailing iviiid, west. 



The ammonia in meteoric water and in red rain, A. Cas.\li (Staz. Sper. Agr. 

 Ital., -'^4 (1901), No. 9, pp. 8.13-848). — Observations during January, February, and 

 March, 1901, on the amount of ammonia in fog, frost, snow, and rain are reported and 

 discussed, as well as an examination into the nature and source of the mineral matter 

 obtained from red rain which fell over Italy, West Austria, and Germany on March 

 10 and 11. A summary of the results of the first inquiry is given in the following 



table: 



Ammonia in 'meteoric, waters. 



[Parts per thousand.] 



