224 Mr Marshal rs Meteorological Summary for 1828. 



During tkejmonth of October it exceeded 30 inches for fifteen 

 days, from the 11th to the end of the month, with the excep- 

 tion of six days. To this circumstance may be attributed the 

 reason of the means being greatest for that month than any 

 through the year. The greatest depression was on the 21st 

 of March, about which period we had frequent rain, snow, and 

 sleet showers. 



The mean height of the thermometer is greater than in any 

 other year for the last six years. It was at its greatest altitude 

 on the 28th June, 81.5°. Thunder and lightning were very 

 frequent during a great part of this month, and the weather 

 was mostly dull and cloudy. The greatest degree of cold was 

 experienced on the 11th of January, and on the 12th and 16th 

 of February. In the early part of January the weather was 

 mostly severe, and about the middle of February we had 

 heavier falls of snow than in any other part of the year. In 



1823, 1825, and 1827, the month of July was the hottest; 

 (deducing this conclusion from the mean for the month,) in 

 1826 and 1828, that of June, and in 1824, August. In 1823, 



1824, 1825, and 1826, January was by the same rule the 

 coldest month ; and in 1827 and 1828 February. The ave- 

 rage temperatures of the hottest months for the last six years 

 is 59.06°, and that of the coldest months is 34.57.° The hottest 

 month in that period was June 1826, and the coldest January 

 1826. 



The quantity of rain for 1 828 is less than that of any other 

 year for the last seven years, excepting only 1826, which was 

 but 43.060 inches. The mean quantity of rain for the last 

 seven years is 57-727 inches. The greatest quantity taken 

 in any year in that period was in 1824, 62.762 inches, and the 

 least in 1826. The greatest quantity of rain in any month 

 was in November 1824, 13.433 inches, and the least in May 

 1826, 0.369. The greatest quantity in a day, in 1828, taken 

 for the preceding twenty-four hours, was on the 8th of October, 

 1.420 inch. 



The number of rainy days has not been equalled in any of 

 the last six years, except in 1823, which was 198. The num- 

 ber of days on which rain has fallen in the months of April, 

 May, June, July, August, and September, is 84 ; and in the 



