﻿230 REGISTER OF THE THERMOMETER FROM 1821 TO 1856. 



Deductions from the Record of Tetnjieratui-e. 



In the 12 years from 1821 to 1832, the thermometer Avas at 2^ P. M. at 102°, July 

 11th and 12th, 1825, and at 12° below zero at 7 A. M., January 25th, 1821, and Feb- 

 ruary 1st, 1826. 



In the 12 years from 1833 to 1844, it was at 2^ P. M. at 99°, July 26th, 1834, and 

 at 10° below zero at 7 A. M., January 4th, 1835, and January 24th, 1839. 



In the 12 years from 1845 to 1856, it was at 2^ P. M. at 98°, July 12th, 1845, and 

 July 13th, 1849, and at 16° below zero at 7 A. M., February 7th, 1855. 



The hottest day in 36 years, was July 11th, 1825, Avhen the thermometer at 7 A. M. 

 was 82°, at 2^ P. M. at 102°, at 9 P. M. at 87°. 



The coldest day was February 0th, 1855, when it was at 6° below zero at 7 A. M. 

 at 21 P. M. at 5i° below, and at 9 P. M. at lli° below. 



The hottest seven successive days were from July 10th to 17th, 1825, the mean 

 temperature for that time being 83°.05. 



The coldest seven successive days, were the last seven days in January, 1844, the 

 mean temperatvire for that time being 6°.71. 



The thermometer was once below zero in March, at 7 A. M., March 3d, 1833. 



January is colder than February for 19 years. 



February is colder than January for 15 years. 



Temperature about equal for 2 years. 



December is colder than January for 9 years. 



December is colder than February for 1 1 years. 



March, 1843, was colder than January or December of that year. 



July is warmer than August for 33 years. 



August is warmer than July for 3 years. 



The warmest year was 1828 ; this year all the months excepting April and 

 October were above the mean of the 36 years for the same months, the 

 mean of the year being .......... 51°.78 



The coldest year was 1836 ; this year all the months were below the mean ; 

 the mean of the year being ......... 45°.34 



Range of mean annual temperature ....... 6°.44 



The highest mean monthly temperature, July, 1825 ..... 77°.61 



The lowest mean monthly temperature, January, 1856 .... 18°.97 



Extreme range of mean monthly temperature ..... 58°.64 



The mean temperature for the 36 years is . . . . . . 48°.66 



