Thermometrical Observations. 295 
GENERAL RESULTS. 
1820. 1821. 1822. 
{. Hottest day, June, 93.50 | June, 92. June & Aug. 95, 
2. Coldest do. January,12 | January,6. | January, 0. 
3. Hottest month, July. August. July. 
4, Coldest do. January. January. January. 
5. Greatest mth’y r’ge, | April. January. February. 
6. Least do. August. July. July. 
7. Greatest d’ly range, | April. March. February; 
&. Least do. July & Aug. | July. August, 
9. Extremes of the y’r. | 81.50 86 95 
REMARKS. 
i. Our hottest month is commonly July, but sometimes Au- 
gust. Our hottest day is usually in June. 
2. Our coldest month is January, and the coldest day usu- 
ally occurs near the beginning of the same month. _ 
3. The temperature of our climate varies from 0 to 95° in 
its greatest extremes ; but the mean of the three years above 
gives only 87° 5’, as the annual range. 
4. The greatest monthly range is from 61° 5’ to 66°, and 
occurs from January to April inclusive: the least monthly 
range varies from 22° 5/ to 28°, and occurs in July or August. 
5. The greatest daily range varies from 35° to 41° and oc- 
curs in February, March, or April; the least daily range is 
from 12° to 20°, and occurs in July or August. 
6. The annual mean, from the observations of 1820 and 
1821, is 59° 54’, corresponding very nearly with the mean as 
laid down in Humboldt’s Isothermal Lines. The observa- 
tion of 1822 would carry it a little higher; but the accuracy 
of this last is doubtful. 
7. It was found that the observations of 10 o’clock, A. M. 
‘correspond very nearly with the annual mean. 
