290 TRANSACTIONS OF THE 



average rainfall for 37 years. The Spring that gave the least rainfall was 

 that of 1857, when .68 of an inch was all that was recorded during the three 

 Spring months. The greatest Spring precipitation occurred during the 

 Spring of 1880, when 16.66 inches was measured; over 14 inches of this 

 falling during the month of April, 1880. There were 50 clear, 30 fair, 

 and 12 cloudy days, with 26 days upon which rain fell, during this Spring. 



Summer of 1886. 



The mean average Summer temperature for 1886 was 70.9°; 0.8° below 

 the average of 34 Summers. The one that gave the highest average 

 temperature was that of 1866, the mean being 74.8°; 3.9° above this Sum- 

 mer, and 3.1° above the average Summer temperature of many years. The 

 coldest was 68.5°, during the Summer of 1881. Its average temperature was 

 2.4° warmer than this Summer, and 3.2° below the average of 34 Sum- 

 mers. The lowest temperature was 51.5°; the lowest recorded in 34 years 

 was 46°. The highest temperature this Summer was 105°; the highest ever 

 recorded was 106°. 



The total precipitation for this Summer was nothing. The average Sum- 

 mer precipitation for 37 years was .15 of an inch. The largest amount 

 ever measured was 1.45 inches, in 1884, the whole amount falling in June. 

 There was no rainfall during 9 Summers out of 37. There was during 

 this Summer, 91 clear. 1 fair, and no cloudy days, and no days upon which 

 rain fell. 



Fall of 1886. 



The mean average Fall temperature was 58.8°; 2.9° below the average of 

 34 years. The Fall during which the lowest average temperature was 

 recorded occurred in 1881 and the present one, 1886, it being 58.5° for each 

 Autumn. The one of highest average temperature was that of 1853, 69°; 

 8.5° above the average of 34 years, and 10.5° above the present Fall. The 

 lowest temperature was 32.2°, and the highest 96°. The highest and lowest 

 Fall temperature recorded in 34 years were 101° in September, 1883, and 

 27° in November, 1880. The total rainfall for Autumn was .89 of an inch. 

 The average precipitation during 38 years was 2.91 inches, leaving the pres- 

 ent Fall 2.02 inches below the mean average rainfall of many years. The 

 largest amount ever precipitated in any one Autumn was 11.44 inches in 

 1885, over 11 inches of this amount having been recorded during Novem- 

 ber, 1885. The least amount was a sprinkle in 1850, and .85 of an inch 

 in 1880. There were 78 clear, 12 fair, and 1 cloudy days, with 7 days 

 upon which rain fell. 



W inter of 1886-7. 



The mean average Winter temperature of 1886-87 (comprising the 

 months of December, 1886, January and February, 1887), was 47.5°; 0.8° 

 below the average temperature of 34 Winters. The Winter that gave the 

 lowest mean average temperature was 1879-80, 44.5°; 3° colder than the 

 Winter just past, and 3.8° colder than the average of 34 Winters. The 

 lowest Winter temperature was 30°, in January and February; the highest, 

 67°, in February. The mildest Winter was that of 1865-6, when the aver- 

 age temperature was 57.4°; 3.1° above the average of many years. The 

 total rainfall for the Winter of 1886-7 was 9.61 inches; 1.64 inches less 

 than the average precipitation of 38 Winters. The greatest total rainfall 

 was 27.94 inches during the Winter of 1861-2, and the least rainfall was 

 1 inch during the Winter of 1850-51. There were 41 clear, 29 fair, and 

 20 cloudy days, with 28 days on which rain fell, during the Winter (1886-7) . 



