318 TRANSACTIONS, NATURAL HISTORT SOCIETY OF GLASGOW. 



July. — With the advent of this month the weather, which had 

 up till now been temperate, became much warmer, and quite a 

 heat wave was experienced, which lasted more or less throughout 

 the entii-e month. For once the period covered by the Glasgow 

 Fair Holidays was a time of brilliant sunshine, being, in fact, 

 one of the finest weeks of the season. On the 20th and 21st 

 there was a slight thunderstorm in the evening, and on the 

 latter day the rainfall for the 24 hours was 1"03 inches. 



The atmospheric pressure was regular and high, the lowest 

 reading being 29"45 inches, on the 24th, and the highest 30' 10 

 inches, on the 8th. 



The thermometer was at or above 70° on sixteen occasions 

 during the month, and the highest reading was 77° on the 5th, 

 and again on the 19th, which is also the highest reading of the 

 year. The average maximum temperature was 69°, and the 

 average minimum 55°. This average maximum has only been 

 once reached during the last eight years — namely, in June of 

 1899 — when the average maximum was also 69°. 



The month's rainfall was 2'39 inches, and there were 22 dry 

 days. 



The diy weather in the early part of the month was somewhat 

 trying on vegetation, especially on subjects recently transplanted, 

 or those which had suffered exhaustion through a prodigality of 

 bloom. After the rainfall on the 20th and 21st these rapidly 

 recovered, whilst the general growth of plants was extremely 

 satisfactory. 



August. — There was a continuation of the bright weather 

 throughout this month which had characterised the opening 

 months of the summer. During the former part of the month, 

 however, there were frequent showers, and on the afternoon of 

 the 13th a slight thunderstonn occurred, accompanied by heavy 

 rain. Thereafter the weather was of a more settled nature, the 

 days being warm and sunny and the evenings cool. 



The pressure of the atmosphere for the first week was moderate 

 and steady. On the 19th there was a sudden rise to 30" 20 inches, 

 and for the succeeding five days the readings were all above 

 30' 00 inches. During the 25th and 26th the barometer fell 

 rapidly, and on the latter date the pressure was indicated at 

 29-20 inches. 



