KANSAS ACADEMY OF SCIENCE. 93 



FACE OF THE SKY. 



The average cloudiness of the year was 40.01 per cent., which is 4.75 per 

 cent, below the average. The number of clear days (less than one-third 

 cloudy), was 179; half-clear days (from one-third to two-thirds cloudy), 114; 

 cloudy, (more than two-thirds), 72. There were 61 entirely clear and 35 en- 

 tirely cloudy days. The clearest month was August, with an average cloud- 

 iness of 28.92 per cent.; the cloudiest month was December, with an average 

 of 51.83 per cent. The mean cloudiness at 7 a.m. was 44.09 per cent.; at 

 2 p. M,, 46.27 per cent.; at 9 p. m., 29.67 per cent. 



DIRECTION OF WIND. 



During the year, three observations daily, the wind was from the S.W. 

 272 times, N.W. 238 times, S. E. 158 times, S. 130 times, N. E. 112 times, 

 E. 90 times, N. 71 times, W. 16 times, calm 8 times. The south winds, in- 

 cluding southwest, south, and southeast, outnumbered the north winds, 

 including northwest, north, and northeast, in the ratio of 560 to 421. 



VELOCITY OF THE WIND. 



The number of miles traveled by the wind during the year was 124,768, 

 which is 14,160 miles less than the average for past six years. This gives a 

 mean daily velocity of 341.83 miles, and a mean hourly velocity of 14.24 

 miles. The highest hourly velocity was 60 miles, on February 25th and 

 March 18th; the highest daily velocity was 960 miles, on March 8th; the 

 highest monthly velocity was 13,787 miles, in March. The three windiest 

 months were March, November, and December; the three calmest months 

 were June, July, and August. The average hourly velocity at 7 a. m. was 

 12.78 miles; at 2 p.m., 16.29 miles; at 9 p. m., 14.03 miles. 



BAROMETER. 



Mean height of barometer column, 29.127 inches; at 7 a.m., 29.150 in.; 

 at 2 p.m., 29.108 in.; at 9 p.m., 29.126 in.; maximum, 29.745 in., on Janu- 

 ary 3d ; minimum, 28.534 in., on December 28th ; yearly range, 1.211 in. The 

 highest monthly mean was 29.253 in., in January; the lowest was 29.024 in,, 

 in May. The barometer observations are corrected for temperature and in- 

 strumental error. 



RELATIVE HUMIDITY. 



The average atmospheric humidity for the year was 67.13; at 7 A. M., 

 77.86; at 2 p. m., 50.11; at 9 p. m., 73.41. The dampest month was Janu- 

 ary — mean humidity 76; the driest month was March — mean humidity 

 56.1. There were 10 fogs during the year. The lowest humidity for any 

 single observation was 12.3, at 2 p. m., on March 9th — less than one-eighth 

 of saturation. 



In presenting this report, the writer desires to acknowledge his indebted- 

 ness to Prof. H. S. S. Smith, for taking the observations during seven weeks' 

 absence in the summer vacation. 



