I90I.] 



FAIRCHILD — CYCLONIC STORMS. 



305 



Seasonal Distribution ; percentage. 



Rochester Skies. 

 Average number of clear, partly cloudy and cloudy days. 



Spring, 

 Summer, 

 Autumn, 

 Winter, 



84 



126 



155 



DISCUSSION OF ROCHESTER DATA. 



The Rochester data in the tables above are based upon the 

 Weather Station records of the last 25 to 30 years. "^ Their range of 

 error is small and they are practically reliable. When everything is 

 taken into account they make a remarkably favorable showing for this 

 city. 



In the three most important elements of climate, those which 

 have most direct and immediate eflect upon industries, including 

 agriculture, and upon personal comfort, Rochester is especially 

 favored. These are temperature, precipitation and winds. 



Temperature : — Probably no other inland city near the same lati- 

 tude has such moderate temperature as Rochester. When we con- 

 sider the intense summer heat of most inland places, and the very 

 severe winter cold, the latter being carried far south in the Mississippi 

 valley, the e.xemption of our city becomes apparent. Even Washing- 

 ton, lying so near the sea and far southward, has a much lower 

 minimum record than Rochester. The higher yearly averages of many 

 cities is produced by the undesirable summer heat. Seasonal or 



* The writer is indebted for a large part of the data contained in the above tables to Mr. Grin 

 Parker, the Weather Observer in ch:^rge of the Rochester station. Many of the figures and facts 

 of this paper will be found in a paper published by Mr. Parker in the Proceedings of the Roches- 

 ter Academy of Science, Vol. 3, page 221, March, 1900. 



