1074 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



At 1 ft. At 2 ft. At 4 ft. 

 rW->. deep. deep. 



Mean temperature of the soil at 9 a.m 35°.9 38°.8 42°.5 



Highest „ „ „ 41°.9 41°.0 44°.3 



Lowest „ „ „ 33°.6 37 c .3 41°.3 



Mean relative humidity of the air at 9 a.m. (complete saturation being repre- 

 sented by 100) 87 



Rain fell on 11 days 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 0-29 in. on the 23rd 



March. — Very warm and wet. Both the days and nights were, as a 

 rule, about 3 degrees warmer than is seasonable. On the coldest night 

 the thermometer on the grass showed 13 degrees of frost. 



The rainfall was heavy, being nearly half an inch in excess of the 

 average quantity for the month. 



Mean temperature of the air in shade ... ... ... ... 44°. 8 



Highest „ „ „ 61°.5 on the 17th 



Lowest || „ „ 28°.0 „ 7th 



Lowest „ on the grass 19°.4 „ 23rd 



A* 1 ft. At 2 ft. At 4 ft. 

 de<p. deep. deep. 



Mean temperature of the soil at 9 a.m 43°.3 43°.8 44°.l 



Highest „ „ „ 45°.9 45°.5 45°.2 



Lowest ,, „ „ 39°.7 41°.8 42°.0 



Mean relative humidity of the air at 9 a.m. (complete saturation being repre- 

 sented by 100) 81 



Rain fell on 12 days to the total depth of 1-79 in. 



(Equivalent to about 8£ gallons on each square yard of surface in the Gardens.) 

 Heaviest fall on any day ... ... .. ... ... ... 0*51 in. on the 14th 



A pril. — Seasonable in temperature and most exceptionally dry. Both 

 the days and nights were, as a rule, of about average temperature. 

 On the coldest night the thermometer on the grass showed 14 degrees of 

 frost. 



The rainfall was most exceptionally light, being only about one-third 

 the average quantity for the month. 



Mean temperature of the air in shade 47°.4 



Highest „ „ || 68°.0 on the 19th 



Lowest „ „ „ 29°.0 „ 7th 



Lowest „ on the grass 18°.4 „ 7th 



At 1 ft. At 2 ft. At 4 ft. 



<leep. deep. deep. 



Mean temperature of the soil at 9 a.m 47°.3 47°.2 46°.5 



Highest || „ „ 51°.8 50°.3 48°.7 



Lowest „ „ „ 42°.4 44°.3 45°.3 



Mean relative humidity of the air at 9 a.m. (complete saturation being repre- 

 sented by 100) 70 



Rain fell on 11 days to the total depth of 0-49 in. 



(Equivalent to about 2\ gallons on each square yard of surface in the Gardens.) 

 Heaviest fall on any day 0 08 in. on the 30th 



May. — Very cold and wet. The days were, as a rule, about 4 degrees 

 colder, and the nights about 2 degrees colder, than is seasonable. On the 

 coldest night the thermometer on the grass showed 9 degrees of frost. 



The rainfall was heavy, being nearly half an inch in excess of the 

 average quantity for the month. 



