Dr Brewster on the Mean Temperature of the Equator ^ 0^ 



tions at Leith, are -f 1° 98; + S^ 51 ; + :2° 97^. Hence 

 we have 



Mean of these, 79° 67 



But by applying the corrections taken from the summer 

 months, viz. + 2°.46 ; —3°. 03 — 4.24 we have 



. Mean daily temperature deduced from 7^ - 80^ 3 



12 - 78 6 

 4 - 78 9 



Mean of these, 79° 26 



Hence the mean annual temperature for 1820-1 is 79® 26 



1823. 

 The observations were made only on the first eleven months 

 of this year, and were recorded at S^, 12'', and 4^. 

 The results are as follows : 



Mean temperature at 8^ - - 78° 85 ' 



— 12 - - 82 90 



4 - - 83 89 



The corrections for these hours deduced from the Leith 



observations are + l°-24 ; — 2°. 51 ; — 2°.97, and we have, 



Mean temperature deduced from 8'' - 80° 09 



12 - 80 39 



__ 4 . 80 92, 



Mean of these, 80° 47 



But by applying the corrections taken from the summer 

 months, viz. + 1°.25 ; —3^03 ; — 4°.24, we have, 



Mean temperature deduced from 8^ - 80° 10 



12 - 79 87 ' 



. _.. 4 - 79 65 



Mean of these, 79° 87 

 VOL. VIII. mo, I. JAN. 1828. e 



