Mr Sadler's Report on Open-Air Vegetation. 247 



sheltered corner against a wall, not cut down, and will bloom in a 

 week. 



Rhndodpndwn arhoreum. — This did not bloom till it had grown 

 for nearly thirty years. This spring at Strathwhillan, Brodick, it 

 was covered with buds, but some of the buds were killed by the 

 frost. 



3. — From the South of Scotland. 



Fro7n Mr. jMalcolm Dunn, The Palace Gardens, Dallieltlt, 

 Mid'Lotliian. 



August 1881. 



Frost set in with 3° on the 12th of October 1880, which gave 

 vegetation a perceptible check, but injured nothing of any import- 

 ance. On the 19 th, however, the frost returned with greater 

 severity, and killed all tender plants — such as Dahlias, French 

 Beans, Potatoes, and the like — the amount of frost being 7°, followed 

 by 13° on the 20th, 6° on the 21st, 11° on the 22nd, 3° on the 23rd, 

 and 4° on the 24th. On the 27th there were T of frost, 28th V, 

 29th 1", and 30th 6°; making a total of 57 degrees of frost regis- 

 tered on 1 1 days during the month ; an amount considerably over 

 the average for October, 



ISTovember opened with sharp frost on the 1st, 2nd, and 3rd ; 

 followed by 4 days fresh, 2 days slight frost, and again 4 days 

 fresh. On the 14th, keen frost set in, and continued till the 24th ; 

 the amount registered on the respective days being, 9°, 12°, 10°, 3°, 

 14°, 6°, 18°, 16°, 17°, 12°, 3°. The ice attained a thickness of 4 

 inches on still water, and snow fell to the amount of 8 inches. 

 The total amount of frost registered for the month was 154° on 

 16 days. 



From the 25th of November till the 13th of December the Aveather 

 was comparatively mild; but on the 14th of the latter month a 

 storm of frost and snow began, which lasted almost without a break 

 tiU the middle of April. Severe frost prevailed from the 14th tdl 

 the end of December; the total amount for the month being 158°, 

 registered on 20 days. The severest frost was 15° on the 17th. 



On New Year's Day, 1881, there Avas only 1° of frost, and on the 

 following two days the thermometer never fell below 40°. Keen 

 frost returned on the 4th, and from that date till the end of the 

 month it prevailed with great severity. On 24 consecutive days the 

 mean temperature was below the freezing point ; and on 4 days the 

 average temperature was 18°, or 14° below freezing point. The 

 severest frost was on the 17th, when the thermometer stood at 

 3° 2 a.m. till 8 a.m., indicating 29° of frost. Diiring the month, 

 482° of frost were registered on 29 days. Snow fell frequently, but 



