210 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



In comparing the barometer records with those of the previous 

 year we find that the atmospheric pressure generally has been 

 lower than that of previous years. In 1899 the pressure was 

 over 30-00 inches on 82 days, and under 29 00 inches on 24 days, 

 whilst during 1900 it was only 50 days above 30*00 inches and 8 

 days below 29-00 inches. The highest reading taken during 1900 

 was 30-38 inches on the 14th March, and the lowest (28-40 inches) 

 was taken on the 19th February. In 1899 the highest was 30-42 

 inches on 17th November, and the lowest (28-26) on 30th 

 December. 



The points from which the wind blew throughout the year were 

 as follows: — From the south-west, 258 ; from the north-east, 30; 

 from the west, 17 ; from the east, 6 ; from the south, 3 ; from the 

 north-west, 15 ; and from the south-east, 36 days. Excluding the 

 direct north and south, the western group shows 290 and the 

 eastern 72 days. In 1899 the western had 255, and the eastern 

 102 days. 



In reviewing the weather of 1900 many interesting features 

 are witnessed. It began as it ended — unseasonably mild and 

 moist. January was very changeable and unsettled, with a 

 preponderance of high temperatures. February and March, on 

 the other hand, were distinctly cold months. Since the break up 

 of this cold spell, and with the exception of some cold days in 

 May, there was no unpleasant reduction of temperature. As 

 early as April there were some very warm days, but perhaps the 

 most notable feature of the weather of 1900 was the abnormal 

 rainfall, especially during the last three months of the year. 



In regard to the general effect on vegetation, speaking broadly, 

 the atmospheric conditions which obtained during 1900 were, on 

 the whole, favourable. 



After the sharp frosts in February, which rudely checked 

 the unseasonable advance made by certain deciduous plants 

 and seriously damaged many classes of evergreens, there was an 

 absence of severe late spring frosts, consequently the growth, 

 though somewhat slow and late, was satisfactory. In many cases 

 the development of shoot and leaf was better than it has been for 

 a series of years. The paucity of bloom displayed by evergreens 

 can be accounted for by the abnormal mildness and excessive wet- 

 ness of the late autumn months, which induced a tendency to 



