354 JOURNAL OF THE EOYAL HOETICULTUKAL SOCIETY. 
Mean temperature of the air in shade ... ... ... ... 38°, 1 
Highest 57".7 on the 26th 
Lowest ... 15°.0 „ 12th 
Lowest temperature on the grass ... ... ... ... ... 6°. 2 ,, 12th 
At 1 ft. At 2 ft. At 4 ft. 
deep. deep. deep. 
Mean temperature of the soil at 9 a.m 37°.9 39°.5 42°.4 
Highest ... 46°.3 44°.5 44°.0 
Lowest 33°.4 35 M 40°.3 
Mean relative humidity of the air at 9 a.m. (comi^lste saturation being repre- 
sented by 100) 88 
Kain fell on 19 days to the total depth of 3*49 in. 
(Equivalent to about 16 gallons on each square yard of surface in the Gardens.) 
Heaviest fall on any day ... ... ... ... ... ... 0-65 in. on the 2nd. 
On the 3rd the ground was covered with snow to the average depth of 3 in. 
On the 11th the ground was covered with snow to the average depth of 4 ,, 
March, — Very cold and dry. The days were, as a rule, about 4 degrees 
colder, and the nights about 1 degree colder, than is seasonable. On the 
coldest night the thermometer on the grass showed 18 degrees of frost. 
The rainfall was light, being about half-an-inch less than the average 
quantity for the month. 
Mean temperature of the air in shade 39". 7 
Highest 56°.9 on the 12th 
Lowest 21°.7 „ 18th 
Lowest temperature on the grass 14°. 4 „ 18th 
At 1 fc. At 2 ft. At 4 ft. 
deep. deep. deep. 
Mean temperature of the soil at 9 am 40°.5 42°.4 43°.9 
Highest 4.3°.7 44°.5 44°.l 
Lowest 38°.6 41°.5 43°.7 
Mean relative humidity of the air at 9 a.m. (complete saturation being 
represented by 100) ... ... ... ... ... ... ... ... 79 
Rain fell on 9 days, and to the total depth of ... ... ... ... 0-92 in. 
(Equivalent to about 4 gallons on each square yard of surface in the Gardens.) 
Heaviest fall on any day ... ... ... ... ... 0-37 in. on the 18th. 
April. — Seasonable in temperature and dry. The days were, as a. 
rule, about 1 degree warmer, and the nights about 1 degree colder, than 
is seasonable. On the coldest night the thermometer on the grass showed 
14 degrees of frost. 
The rainfall was light, being but little more than half the average 
quantity for the month. 
Mean temperature of the air in shade 
Highest 
Lowest 
Lowest temperature on the grass ... 
47°.5 
76°.5 
on the 21st 
25°.3 
2nd 
17°.o on the 2nd and 26th 
At 1 ft. 
At 2 ft. 
At 4 ft. 
deep. 
deep. 
deep. 
46°.3 
45°.9 
45°.4 
53°.2 
50°.3 
47°.8 
37°.5 
40^9 
43°.3 
Mean temperature of the soil at 9 a.m. 
Highest 
Lowest 
Mean relative humidity of the air at 9 a.m. (complete saturation being 
represented by 100) 71 
Rain fell on 14 days to the total depth of 0-89 in. 
(Equivalent to about 4 gallons on each square yard of surface in the Gaiden^.) 
Heaviest lall on any day 0*32 in. on the 3rd. 
