Notes and Glcanina^s. 



229 



at the hours of seven A.m., two p.m., and nine p.m., not only of the matters here 

 made use of, but also of atmospheric pressure, force and direction of wind, and 

 all observed casual phenomena ; so that, should it ever be necessary to pursue 

 this subject more into detail, we have ample data for doing so. 



Table No. I. 

 " Monthly and aggregate mean temperature for the months named, from 1859 

 to 1868, at Kelley's Island, O. : — 



" It will be observed, that, so far as temperature is concerned, there is but a 

 slight difference in the means of any one year from the means of the whole 

 period ; consequently we cannot charge temperatures as being the cause of our 

 troubles. 



Table No. II. 



" Showing the number of days on which rain fell, and the amount of water 

 in inches and hundredths during the months named, for the years 1859 to 1868, 

 both inclusive, — a period of ten years, — at Kelley's Island : — 



-May — . , — June — . . — July — • - — Aug.- 



-Sept.- 



-Oct.- 



Aggregate 

 six months. 



