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KANSAS ACADEMY OF SCIENCE. 



this being a very healthful mean. The mean at 7 a. m. was 75.49; at 

 2 P.M., 46.72; at 9 p. M., 71.08. There were eleven fogs during the 

 year. October was the dryest month— humidity 53.69; July was the 

 dampest month— humidity 75.2. The least amount of atmospheric 

 moisture observed was at 2 p.m., April 12th, when the relative humid- 

 ity was only 9.2, less than one-tenth of saturation. 



The following table gives the mean temperature, the extremes of 

 temperature and the rainfall for each month of the year 1872 : 



*The yearly mean.s are not found by dividing the monthly means by twelve, which would be 

 correct if the number of days in each month were the same; but by dividing the sum of all the 

 observations by the actual number of observations ( in this case 1,098 ). 



