198 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



warm weather, however, was, after the long period of cold and 

 wet, very much welcomed. Towards the end of the month the 

 trees in the city parks defoliated rapidly. Though later than 

 usual in beginning to fall, the leaves of Limes, Elms, Sycamores, 

 and Beeches were all off about the same period as in former 

 years. The display of autumn flowers was above the usual, and 

 made up for the meagre display made by their summer 

 congeners. 



October. — The warm weather which prevailed during the 

 greater part of September did not continue beyond the first few 

 days of this month. Towards the end of the first week the 

 weather became dull and cold, with slight showers, which were 

 the precursors of a very prolonged period of heavy rains. On 

 the 6th the rain fell almost continuously, and by 9 a.m. on the 

 7th over an inch was registered. With a day's respite rain 

 again set in, and for about three weeks it fell more or less 

 continuously, one day's fall being somewhat phenomenally heavy. 

 After the 26th the weather was more settled and colder. 



Though the barometric readings are within a moderate range, 

 the changes in the atmosjDheric pressure indicate pretty clearly 

 the variable nature of the weather. From 29 '35 inches on the 

 1st the pressure fell to 29*10 inches on the 2nd, then, rising 

 sharply, it was at 29*70 inches for two days — 4th and 5th. A 

 sharp depression on the 6th and 7th brought it down to 29*20 

 inches. A gain of several points followed, and the pressure kept 

 fairly steady until the 14th, when another sharp fall occurred 

 to 29*00 inches on the 15th. Rising slightly for two days 

 another quick, depression was noted, the pressure indicated on 

 the 18th and 19th being 28*90 inches. The recovery was sharp, 

 and the pressure kept within two points of 29*50 inches without 

 any notable variation until the end of the month. 



Rain was registered on 27 occasions, there being thus only 

 4 dry days. The total amount was 6*67 inches, an abnormal 

 amount for one month. Nearly half of the amount fell on two 

 days — the 6th and the 15th. The total for the twenty-four hours 

 ending at 9 a.m. on the 7th was 1*01 inches, and for the twenty- 

 four hours ending at the same time on the 16th, 2*27 inches. 

 In the corresponding month of 1906 the rainfall amounted to 

 5*33 inches, with 5 dry days, so October has been an excessively 

 wet, month two years in succession. 



