312 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



Glenlee ; and the least, 1*2 inches at Cupar, and 1*3 inches at 

 Kirkwall and Peterhead. Thunderstorms with torrential rains 

 were of frequent occurrence, a remarkably severe electrical 

 display being that of the 11th. Bright sunshine was generally 

 under the normal, except at some places in the north and 

 west. 



July 1900. — The weather of July was very changeable, with a 

 high mean temperature. Frequent and severe thunderstorms and 

 a good deal of rain accompanied the shallow barometric depressions 

 which from time to time moved across the country. The mean 

 temperature was 58° '9, being nearly two degrees above the average, 

 and varied from 62° - 3 at Smeaton to 54°'8 at Deernesa in the 

 Orkneys. The range in the mean temperatures was thus 7°"5., 

 In Shetland the average temperature was slightly below the 

 normal, but there was an excess of three degrees in the valley of 

 the Tweed. Rainfall was 15 per cent, in excess of the normal, 

 and was distributed with great irregularity, being slightly below 

 the mean on the east coast south of the Forth and on the west 

 coast south of the Clyde. The excess was considerable at Bressay, 

 Thurso, and several places in Banff and Sutherland, where nearly 

 double the average fell. The number of days with rain was 

 unusually large, amounting to 27 at Stornoway, 28 at Glencarron, 

 and 29 at Laudale. The greatest rainfalls were 5 - 8 inches at 

 Cally (Kirkcudbright) and 5*6 inches at Glencarron; and the 

 smallest, 2*2 inches at Wolfelee (Roxburgh), and 2 - 5 inches at 

 Ochtertyre, Rose well, and Paisley. Bright sunshine was rather 

 deficient, being just equal to the average in Edinburgh, but all 

 the other stations (except Marchmont) had less than the normal. 

 The wind was light in force during most of the month, but slight 

 north-westerly gales were experienced at a few exposed places in 

 the north on the 6th and 7th, and again on the 30th. 



August 1900. — During nearly the whole month very unsettled 

 weather prevailed, with frequent thunderstorms, heavy rains, a 

 rather low mean temperature, and little sunshine. The mean tem- 

 perature was 55° "8, being about a degree under the average, and 

 ranged from 58 o, at Glasgow and Cally to 52° 1 at the elevated 

 stations of Leadhills and Benquhat. There was a marked excess 

 of east and north-east winds, which brought about an unusual 

 thermometric gradient, the mean temperature being above the 

 average to the north and west of the Caledonian Canal, but below 

 the normal in other districts, more particularly at places where 



