328 Meteorological Ohservations at Hudson, Ohio. 



The number of clear days for the entire year at the two 

 places is about inversely as the degree of cloudiness; yet com- 

 paring the observations at 1^ and 3 P. M. we find the number of 

 clear days for spring and autumn nearly the same at the two 

 places ; while for summer and winter the number at Hanover is 

 from two to three times that at Hudson, It must, I think, be 

 admitted, that observations of this kind possess considerable in- 

 terest ; and considering the ease with which they are taken, it is 

 a matter of surprise that they should be almost universally neg- 

 lected. To the astronomer they are perhaps the most important 

 of all meteorological observations, as they indicate the most suit- 

 able site for a public observatory. At Hudson, for example, du- 

 ring four months of the year, astronomical observations are 

 almost entirely impracticable. 



RAIN. 



The following table exhibits the amount of rain for each 

 month since the gauge was erected. The numbers^ for 9 A. M. 

 show the amount fallen since the preceding 3 P. M. 



