162 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



the average minimum 48°, compared respectively with 60° and 

 51° in 1902 and 65° and 51° in 1901. 



The heavy rains and low temperature had the effect of 

 paralysing the active growth of many plants, and summer 

 bedding plants generally were deficient in bloom. The de- 

 foliation of lime trees began freely after the 8th, while towards 

 the end of the month it was very evident on elms, sycamores, 

 and chestnuts. There was no evidence 'of any harvesting 

 operations in the district, excepting here and there a struggle 

 with a belated hay crop. 



September. — The weather during the first ten days was 

 showery and unsettled. Afterwards it became drier and warmer, 

 and for thi-ee weeks the atmospheric conditions were of a very 

 pleasant nature. 



During the showery weather of the first week the atmospheric 

 pressure was irregular, between 29" 10 and 29'30 inches, the 

 latter occurring on the 11th. Thereafter the rise was steady, 

 though somewhat quickly, to 30"40 inches on the 15th. It 

 remained above 30*00 inches until the 26th, then gradually 

 declined to 29"55 inches on the 30th. 



Although frost was not actually registered on the minimum 

 thermometer in shade, the temperature got low at times, so 

 much so that the radiating thermometer on the grass indicated 

 frost on twelve occasions. The average maximum temperature 

 was 59° and the average minimmn 46° ; in September, 1902, 

 the figures were 59° and 48°. 



The rainfall amounted to 3'63 inches, and there were fifteen 

 dry days. These figures almost correspond with those of the pre- 

 vious September, which were 3"56 inches rain and 14 dry days. 



The effect of the warm, sunny days on vegetation after so 

 much rain was very striking. Flowering plants rapidly became 

 gay with bloom, and many species of herbaceous plants were 

 brighter and more vigorous than early appearances promised. 

 Rhododendrons and other shrubs set flower buds. Autumn tints 

 deepened on deciduous plants, and the early rijsening larger trees 

 defoliated rapidly. Cereals ripened quickly, and hai-vesting 

 operations were general by the middle of the montli. 



