METEOROLOGICAL OBSERVATIONS :\L\DE AT CHISWICK IN 1901. 803 





At 1 ft. 



At 2 ft. At 4 ft. 





deep. 



deep. deep. 



Mean temperature of the soil at 9 a.m. ... 



37^.5 



40^.3 43°.8 



Highest 



41°.4 



41°.9 4o^o 



Lowest ,, „ „ 



35^3 



39 =.0 42°.G 



Mean relative humidity of the air at 9 a.m. 



(complete saturation being repre- 



sented by 100) 





85 



Rain fell on 7 days to the total depth of 





l lo in. 



Equivalent to about 5 gallons on each square yard of surface in the Gardens.) 

 Heaviest fall on any day ... ... ... ... ... ... 0*48 in. on the 4th. 



On the 5th the ground was covered with snow to the average depth of ... 2 ins. 



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

 voider, and the nights about 1 degree colder, than is seasonable. On the 

 Kjoldest night the thermometer on the grass showed 16 degrees of frost. 



The rainfall was heavy, being more 



than half an 



inch in excess of 



.the average quantity for the month. 







Mean temperature of the air in shade 





40°.0 



Highest „ MM 





5o°.l on the 5th 



Lowest „ ,, M 





24°.l „ 29th 



-Lowest M on the grass 





16°.0 „ 29th 





At 1 ft. 



At 2 ft. At 4 ft. 





de< p. 



deep. deep. 



"Mean temperature of the soil at 9 a.m. 



40°.8 



42°.4 44°.0 



Highest „ M „ 



... 43°.l 



43°.2 44°.2 



Lowest M M M 



37°.4 



40°.9 43^2 



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



sented by 100) 





84 



-Eain fell on 13 days to the total depth of 





1-97 in. 



(Equivalent to about 9 gallons on each square yard of surface 



in the Gardens.) 



Jleaviest fall on any day 





0-49 in. on the 30th 



April. — Warm and wet. The days 



were, as a rule, about 2 degrees 



ivarmer than is seasonable, while the nights were of about average tem- 

 perature. On the coldest night the thermometer on the grass showed 

 12 degrees of frost. 



The rainfall was heavy, being about three-quarters of an inch in excess 

 ^of the average quantity for the month. 



Mean temperature of the air in shade 





48°.8 



Highest „ M M 





73°.8 on the 23rd 



Lowest ,, M M 





27°.9 „ 2nd 



Lowest „ on the grass 





20°.l 2nd 





At 1 ft. 



At 2 ft. At 4 ft. 





deep. 



deep. deep. 



Mean temperature of the soil at 9 a.m 



47°.4 



4G°.7 4.5°.7 



Highest „ „ 



54°.0 



or.l 480.5 



Lowest M ,, 



41°.2 



42°.l 43"..5 



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



being repre- 

 05 



sented by 100) 





Rain fell on 16 days to the total depth of 





2-20 in. 



(Equivalent to about 10 gallons on each square yard of surface in the Gardens.) 



Heaviest fall on any day ... 





0-58 in. on the 3rd 



May. — Warm and exceptionally dry. 



The days were, 



, as a rule, about 



2 degrees warmer than is seasonable, 



while the ni^ht 



s were of about 



average temperature. On the coldest night the thermometer on the grass 

 .showed 5 degrees of frost. 



