PLATE X. Royal Soc trans iidin Vol AV pp 208 &e! 
‘MEAN 183741 



































DIAGRAM SHEWING THE PROGRESS OF HEAT DOWNWARDS 
BY THE MEAN OF FIVE YEARS. 
ay February March April May June July August Septem? October Novem’ Decem? Jan? 
3 ¢ 
eee Tis 26 4 218 261 8 i 220 6B wW2 SWUM wa 1 8 22.29 § : W199 62 2 9 Wb 2330 79 WM 0 28 4 Th 18 26 2 9 1 23.30 6 13 
= x ica T T Se a | T = iz cae Ga GGL | 7 a aa | r 
\ T | ] | | ee] 


























































| | 
| | 
| | 
ae 
| 
| 
| 
att 

C 
—GRAIGLEITH 

