

PROFESSOR FORBES ON THE CLIMATE OF EDINBURGH. 329 
10. The next observations we find recorded are in the same volume (the third) 
of the “Essays of the Philosophical Society in Edinburgh” from which I have 
already quoted. They embrace the years 1764 to 1770 inclusive, and consist of 
two sets, one made at Hawkhill, situated between Edinburgh and Leith, at 103 feet 
above the sea, the other at Edinburgh itself. If we assume that the latter set was 
made in the same locality as the observations of 1732-36, the height above the 
Hawkhill Observatory would be 167 feet. Both sets were made uniformly at the 
hour of 8 a.M., and a correction has been applied to the monthly means to reduce 
them to the average, to the extent indicated in Art. 8. The Hawkhill observa- 
tions were continued at least until 1776 by Mr Maccoway, and the results are 
contained in the first volume of the “ Edinburgh Transactions,” page 333. They 
are also included in this Table, with the same correction for the hour of obser- 
vation (8 A.M.) 

EDINBURGH (reduced). 



Jan. Feb. Mar. | April. | May. | June. | July. | Aug. |. Sept. | Oct. Nov. | Dec. | Year. 












-1732 | 34:4 | 41°5 | 41:0 | 41°38 | 48°6 | 57-7 | 5671 | 54:2 | 48:5 | 44:4 | 386°5 | 35:9 | 45-0 
1733 | 381 | 39:3 | 388 | 45:4 | 50°9 | 581 | 59:3 | 53°7 | 48-5 | 43°5 | 43:4 | 43:2 | 468 
1734 | 344 | 42-0 | 44-2 | 48:2 | 48:1 | 56:3 | 5771 | 542 | 476 | 40°8 | 86:5 | 35:9 | 45°4 
1735 | 36°3 | 35:1 | 38°38 | 43°6 | 48:1 | 54°9 | 57°5 | 56°5 | 47°6 | 43°1 | 42:0 | 38:2 | 45:1 

1764 | 34-6 | 35°4 | 40°3 | 45:0 | 53:5 | 55:9 | 60°0 | 57°5 | 51°9 | 46°6 | 40°2 | 36-7 | 46:5 
1765 | 40°9 | 34:5 | 409 | 45-7 | 49°4 | 533 | 57-5 | 566 | 541 | 47-0 | 41:2 | 37-6 | 46°5 
1766 | 38:1 | 31-1 | 38:7 | 46:1 | 46°3 | 55:7 | 59°3 | 59°5 | 46:9 | 46-4 | 43-7 | 37:9 | 45°8 
tyor | ol:2 | 41:3 | 39:2 | 42:6 | 47-1 | 52°9 | 55:7 | 57-8 | 55:2 | 45:5 | 42°5 | 37-6 | 45-7 
1768 | 33:2 | 37-8 | 38°6 | 46:2 | 50:0 | 54:2 | 57-9 | 57°5 | 50°8 | 42°6 | 38°8 | 37:5 | 45-4 
1769 | 33°8 | 35°2 | 406 | 45:2 | 49:0 | 53:2 | 59:0 | 55:4 | 53:3 | 45°2 | 39:2 | 37°38 | 45-6 
1770 | 37°1 | 38°83 | 34:4 | 40°6 | 46-1 | 52°4 | 55:7 | 57-2 | 53-6 | 44:0 | 37:3 | 34:9 | 44:3 











Mean of 11 years, 45°64 

HAWKUHILL (reduced). 


Jan. Feb. Mar. | April. | May. | June. | July. | Aug. | Sept. Oct. Nov. Dec. | Year. 










1764 | 366 | 386 | 40:0 | 463 | 543 | 57°5 | 61:4 | 59:0 | 526 | 47°3 | 39:2 | 36-2 | 47-4 
1765 | 401 | 33°5 | 41:3 | 468 | 54:0 | 556 | 6071 | 581 | 53°3 | 48:0 | 87:9 | 35:°7 | 47-0 
1766 | 35:0 | 351 | 394 | 481 | 47-9 | 559 | 606 | 60°9 | 53:2 | 474 | 43-8 | 87°38 | 47-1 
1767 | 32:0 | 41°7 | 40°2 | 47-1 | 50°8 | 55:0 | 58-1 | 61:2 | 56:2 | 46:5 | 43°8 | 39°4 | 47-7 
1768 | 33:5 | 38°8 | 41°5 | 49:0 | 546 | 56:4 | 60°0 | 60-1 | 52°6 | 47°8 | 40°9 | 39:2 | 47-9 
1769 | 35°6 | 37-2 | 42:9 | 47°8 | 52-5 | 56:3 | 61°8 | 57°77 | 55:5 | 465 | 40:9 | 40°5 | 47-9 
mead | o9> | 416 | 371 | 43°8 | 50-0 | 552 | 586 | 59°6 | 567 | 46°6 | 39°l | 37°7 | 47:1 
1771 | 341 | 379 | 37-7 | 43:9 | 51:8 | 56:8 | 59°6 | 57°7 | 53:2 | 47°38 | 42°9 | 41:8 | 47-1 
1772 | 32°4 | 32-2 | 38°8 | 451 | 505 | 58:3 | 59°8 | 58:5 | 53:0 | /49°8 | 42°7 | 40-1 | 46:8 
1773 | 39°5 | 36-4 | 43:9 | 47°8 | 50:0 | 56°3 | 58°8 | 59°4 | 52°38 | 47°0 | 39:2 | 36-9 | 47-3 
1774 | 30:0 | 37°5 | 38:9 | 45°3 | 48:0 | 56°2 | 585 | 58°3 | 5382 | 49°3 | 39:1 | 37°8 | 46-0 
1775 | 38°7 | 40:4 | 41°38 | 49°0 | 54:1 | 57-7 | 60-2 | 58:7 | 54°8 | 46:3 | 390 | 39-1 | 48:3 
1776 | 30:1 | 37:0 | 42-7. | 481 | 50-7 | 566 | 605 | 57°8 | 533 | 48°0 | 42°0 | 383 | 47-1 
















