METEOROLOGICAL OBSERVATIONS AT CHISWICK IN 1903. 545 



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

 sented by 100) 73 



Rain fell on 12 days to the total depth of 1-85 ins. 



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

 Heaviest fall on any day 0*45 in. on the 28th 



May. — Warm and exceptionally wet. The days were, as a rule, about 

 1 degree warmer, and the nights about 2 degrees warmer, than is season- 

 able. On the coldest night the thermometer on the grass showed 8 degrees 

 of frost. 



The rainfall was exceptionally heavy, being 1 J in. in excess of the 

 average quantity for the month. 



Mean temperature of the air in shade ... ... ... ... 54°.0 



Highest „ „ ,. 77°.3 on the 22nd 



Lowest „ „ ' „ 32°.2 „ 13th 



Lowest „ on the grass 24°.0 „ 13th 



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

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 53°.7 52°.0 49°.8 



Highest „ „ „ 60°.0 56°.0 52°.7 



Lowest „ „ „ 50°.0 48°.2 47°.0 



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



represented by 100) ... ... ... ... ... ... ... ... 74 



Rain fell on 17 days to the total depth of ... ... ... ... 3.24 ins. 



(Equivalent to about 15 gallons on each square yard of surface in the Gardens.) 

 Heaviest fall on any day ... ... ... ... ... ... 0*93 in. on the 30th 



June. — Very cold and most exceptionally 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 3 degrees of frost. 



The rainfall was most exceptionally heavy, being more than three 

 times the average quantity for the month. 



Mean temperature of the air in shade 56°. 6 



Highest „ „ „ 84°.7 on the 28th 



Lowest „ „ „ 37°.8 „ 13th 



Lowest „ on the grass 29°.3 „ 13th 



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

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 58°.0 56°.4 53°.9 



Highest „ „ „ 66°.3 61°.3 55°.5 



Lowest „ „ „ 53°.0 54 c .2 53°.0 



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



represented by 100) 71 



Rain fell on 10 days to the total depth of 6*43 ins. 



(Equivalent to about 30 gallons on each square yard of surface in the Gardens.) 

 Heaviest fall on any day 1-30 in. on the 13th 



July. — Cold and exceptionally wet. The days were, as a rule, about 

 1 degree colder than the average, while the nights were of about a 

 seasonable temperature. On the coldest night the thermometer on the 

 grass showed 1 degree of frost. 



The rainfall was exceptionally heavy, being nearly double the average 

 quantity for the month. 



