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58 Cincinnati Society of Natural History. 



For 1856, being exceptionally low, those taken at College Hill are 

 given for comparison. January, 1.588; February, 2.340; March, 0.655; 

 April, 1.158; May, 2.390; June, 1.525; July, 0.325; August, 0.426; 

 September, 2.710; October, 1.218; November, 3.118; December, 3.580. 

 Total, 21.043. 



Quantities for seasons and periods : Winter, 9.70; Spring, 11.50; 

 Summer, 12.16; Autumn, 9.15. From 1835 to 1840, 44.26; 1840 to 1845, 

 44.57; 1845 to 1850, 53.57; 1850 to 1855, 46.48; 1855 to 1860, 39.19; 

 1860 to 1865, 37.86; 1865 to 1870, 39.70; 1870 to 1875, 32.44; and for 

 1875 to 1877, 46.83. If divided in seven year periods, would be as 

 follows : 1st, 44.29 ; 2d, 49.90; 3d, 47.49; 4th, 37.75; 5th, 39.03; 6th, 

 36.58. The greatest amount in any one year, 1847, was 65.18; the 

 next greatest was in 1836, 57.39. The least amount in any one 3*ear, 

 1856, was 22.87; and the next least amount was in 1839, 29.62. The 

 greatest amount in any one quarter was in 1847, the last quarter, -21.67; 

 the next greatest amount in one quarter, was June, July and August, 

 in 1845, 21.44. The least amount in ixwj one quarter, April, May 

 and June, of 1856, was 3.46; and August, September and October, 

 of 1862, was 3.22. The greatest amount in any one mouth, June, 1845, 

 was 11.50; the next greatest, September, 1866, 10.50. The least 

 amount in any one month, October, 1839, was 0.13; the next least, 

 September, 1870, 0.30. The greatest amount of rainfall, August 21, 

 1861, was 3.35 in two hours; the greatest snowfall, January 15, 1863, 

 was 21 inches. 



The annual amount of snow varies from 7.1 up to 50, and occurs in- 

 variably in December, January and Februar}^ and generally in Novem- 

 ber and March. Means, November, 1.7; December, 6.3; Januar}^ 5.6; 

 Februar}', 6.2; March, 2; Total, 21.8. The precipitations are well 

 distributed through the seasons, having occurred every month during 

 the series, 10 winter, 9 spring, 4 summer, and 13 autumn months, have 

 been less than 1 inch, while 10 months have been over 9 inches, 11 

 over 8 inches, 30 over 7 inches, 59 over 6 inches, 104 over 5 inches, leaving 

 254 months receiving from 1 to 5 inches. Temperature: Januar}^, 

 32.10°; February, 34.10°; March, 42.35°; April, 54.30°; May, 63.60*^: 

 June, 72°; July, 76.26°; August, 74.50°; September, 66.30°; October, 

 53.50°; November, 41.60; December, 34.50°; Winter, 33.73°; Spring, 

 53.08°; Summer, 74.25°: Autumn, 54.13°; Total, 53.80°. Extreme 

 changes of temperature, 1859, Deceml)er 6th, 52° in 24 hours, and 

 December 31st, 1863, 55° in 14 hours. Mean aA^erage annual temper- 

 atures range from 51° to 56° and varies from 18° below to 110° 

 above. 



