190 TRANSACTIONS, NATURAL HISTORY SOCIKTY OP GLASGOW. 



average for this month. On two oocasions the fall for twenty- 

 four hours was over half-au-inch, 0'65 inch being registered on 

 the 17th and 0'55 inch on the 20th. 



Frost was registered on 12 days, the total amount being 

 76°, which was less than in the corresponding month of 1906, 

 when a total of 92° was registered for 19 days. The average 

 niaximimi temperature was 41° and the average minimum 32°, 

 compared with 42° and 30° respectively for Febi-uaiy, 1906. 

 The lowest readings were 19° on the 1st, 21° on the 5th, 

 21° on the 6th, and 23° on the 23rd, after which no frost was 

 registered for the month. 



Consequent on the wintiy character of the weather, vegeta- 

 tion made little apparent pi-ogress in the early half of the 

 month. The first Snowdrops observed in bloom were on the 

 10th; but as soon as the frosts gave way they bloomed profusely, 

 and were in their glory during the last week of the month. The 

 Winter Aconite (Erantliis hyemalis) began to bloom during the 

 third week. 



March. — With the exception of heavy rain on the night of 

 the 1st and morning of the 5th, the weather during the first week 

 was comparatively mild and dry. The afternoon of the 7th was 

 wet and stormy, which conditions prevailed throughout the 8th. 

 On the 9th frost set in, and snow began to fall during the 

 afternoon; and on the morning of Sunday, 10th, it lay to a 

 depth of fully 4 inches. Under the influence of bright sunshine 

 and a strong westerly wind, which began about mid-forenoon of 

 that day, the snow rapidly disappeared, and by 8 p.m. very little 

 was left on the ground. Several fine days were experienced, and 

 were followed by a week of changeable weather, with occasional 

 heavy rains. From the 20th until the end of the month the 

 weather was fine and bracing, with several bright days of 

 sunshine. 



Though somewhat irregular during the early half of the month, 

 the atmospheric pressure was fairly high throughout, ranging 

 between 30"10 inches on the 1st to the same point on the 12th, 

 when there was a steady depression during the period of change- 

 able, squally weather to 29'20 on the 16th, with a remarkably 

 quick drop to 28' 50 on the I7th, which presaged the heavy 

 rainfall registered on that date. After the storm the pressure 

 quickly increased till it reached 30' 25 inches on the 23rd, and 



