174 IV. CLIMATE. 



the same province, for the years between 1800 and 1825, 

 that the extreme temperatures observed by him were 85 

 and — 3 ; the registers being made at the hours 8, 1, 10. 

 Similar local variations occur also elsewhere at corre- 

 sponding dates. Thus, Professor Dickie mentions a 

 temperature of — 1 at Aberdeen on February 15, 1855. 

 At Thames Ditton, the lowest temperatures of the same 

 month in that year occurred some days before and after 

 the 15th. In the early mornings of the 11th and 19th 

 the thermometer was down to 8 degrees above zero, the 

 lowest points reached ; and in the mornings of the 18th 

 and 20th it stood at 10. It was not so low at Thames 

 Ditton between the dates mentioned ; and there the 

 lowest points of the month were 9 degrees above the 

 lowest at Aberdeen. Greater depressions of the thermo- 

 meter probably occur in places much elevated above the 

 sea. At Lead-hills in South Scotland, at 1280 feet of 

 altitude, the observed extremes were 79 and — 16, during 

 the ten years following 1810. 



N.B. SuMMAEY OF DiSTEiBBTiON, page 175. — The letters and figures 

 used as abbreviations will be found explained after the end of the list. 

 The like coui-se will be taken with the succeeding lists also. 



