A. JE. Verrill — The Bermuda Islands. 



499 



According to Governor Lefroy the lowest records of temperature 

 are most apt to occur in March. He states that in the years 1872-77, 

 a thermometer on grass registered below 40°, 17 times, viz.: — Dec- 

 ember, twice ; January, four times ; February, three times ; March, 

 eight times. The lowest was 34°, in January, 1874 ; the lowest in 

 March was 35°, in 1877. 



Table of Mean Monthly Temperatures and Rainfall. 



The following table is copied from Governor Lefroy's work on the 

 Botany of Bermuda : 



Conditions of Temperature and Rainfall affecting Vegetation in 



Bermuda.* 



January .. 

 February . 



March 



April 



May 



June 



July 



August 



September 

 October .. 

 November 

 December 



Mean 



rainfall. 



Inches. 



In. 

 3.8 

 4.2 

 3.6 

 3.3 

 4.1 

 3.3 

 4.0 

 3.9 

 4.8 

 6.7 

 5.7 

 4.0 



51.4 



99 



years was 



The mean annual temperatures of the air during 

 71°.9 at 9 a. m., and 73°.4 at 3 p. m. 



The mean temperature of the soil at the depth of 12 inches was 

 69. °4, which is probably very close to the true mean annual temper- 

 ature. He gives the average annual rainfall, for the same period, as 

 51.4 inches. 



* The mean temperatures are given by observations extending (with some 

 lacunse) from August, 1855, to March, 1877. The temperature of the soil at 6 

 inches is the mean between observations at 9 a.m. and 5 p.m., apparently the. 

 hours of extreme daily range. The temperature at 12 inches is that at 9 a.m.; 

 the daily range at this depth is under 0°.5, and is about the mean at 9 a.m. 



