METEOROLOGICAL OBSERVATIONS AT WISLEY IN 1904. 649 



Mean temperature of the air in shade 61°.0 



Highest „ „ „ 87°.3 on the 4th 



Lowest „ „ „ 40°.0 „ 25th 



Lowest „ on the grass 34°.4 ,, 25th 



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

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 63°.2 63°.7 61°.5 



Highest „ „ „ 68°.7 66°.8 62°.6 



Lowest „ „ „ 58°.l 60°.5 60°.0 



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



expressed by 100) 71 



Rain .fell on 10 days to a total depth of 1*61 in. 



(Equivalent to about 7^ gallons of water per square yard.) 



Heaviest fall on any day 0*08 in. on the 31st 



The prevailing winds were from between south-east and west. 

 The average velocity of the wind was 5| miles per hour. 



There were 237 hours of bright sunshine, equal to 53 per cent, of the total possible 

 amount. 



There was only one day on which no sunshine was recorded. 



September. — A more than usually cool month, with deficient rainfall 



and more than the average amount of sunshine. There were some dense 

 fogs during the closing days of the month. 



Mean temperature of the air in shade 54°.6 



Highest „ „ „ 71°.0 on the 5th 



Lowest „ „ „• 32°.4 „ 21st 



Lowest „ on the grass 28°.3 „ 20th 



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

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 56°. 6 58°. 4 58°.5 



Highest „ „ „ 61°.5 62°.4 60°.5 



Lowest „ „ „ 52°.9 55°.5 56°.2 



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



expressed by 100) 79 



Rain fell on 12 days to a total depth of 1*54 in. 



(Equivalent to about 7 \ gallons of water per square yard.) 



Heaviest fall on any day 0*24 in. on the 14th 



The prevailing winds were from north-east and east, and from south-west and west. 

 The average velocity of the wind was A\ miles per hour. 



There were 160 hours of bright sunshine, equal to 43 per cent, of the total possible 

 amount. 



There were 4 days on which no sunshine was recorded. 



October. — A quiet, dull month, with slight rainfall and only a moderate 

 amount of sunshine. Fogs occurred during the latter half of the month. 

 On the coldest night the thermometer on the grass showed 7 degrees of 

 frost. 



Mean temperature of the air in shade ... 49°.7 



Highest „ „ „ 66°.3 on the 18th 



Lowest „ „ „ 26°.5 „ 15th 



Lowest „ on the grass 25°.l „ 15th 



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

 deep. deep. deep. 



Mean temperature of the soil at 9 a.m 51°.7 53°.4 54°.4 



Highest „ „ „ 55°.3 55°.7 56°.l 



Lowest „ „ „ 46°.7 50°.6 53°.l 



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



expressed by 100) , 92 



U 



