A. E. 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 
Mareh 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.* 
| 
| Temperature 
Temperature | 4 
of the air. of the soil: rainfall 
i WAN Ot ane j | Inches. 
9 A.M. | 3P.M. at 6 Ins./at12 Ins. | 
° | ° ° | ° In. 
PEUMGV meee Sao os a ee a Th Sap 64.0 | 65.5 62.0 62.5 3.8 
Hebiuainvge seas nes 3-2 os sos se a= 63.7 | 65.1 61.1 61.4 4.2 
Manchest s eee) Le LO ey 63:8" |. 65.5. | GE 61.5 3.6 
A oT. hE Se ae ele ae 67.4 | 69.3 64.8 64.9 3.3 
UPS eet ele Sele ee 72.0 73.5 69.9 | 69.5 4.1 
Thiners aap oeee ee Sevan ee he 163800 |e ses 74.5 73.9 3.3 
linia! S38 ae ee ee 81.3 82.9 | 78.3 Tithe: 4.0 
AVE CUES pee eee 82.5 84.25 | RSrt 79.2 3.9 
Noplemberercnce a saen. 22 80.2 81.9 Tel 76.9 4.8 
‘QreDIGEIES = 2 a Rea ee 75D 76.7 Tae: (Ours 6.7 
INGVeMpeI weet. asle es Se! 69.8 Taleal 67.2 68.1 5.7 
WEGenUbe te see ees oe wee 65.4 -| 66.4 62.9 63.2 4.0 
71.9 73 69.3 69.4 51.4 
The mean annual temperatures of the air during 22 years was 
W1°.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 
lacune) 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. 
