during the years 18&6 and 1827. 



135 



I have added two columns of thermometrical observations at 

 8 m. and 8 a., which I caused to be made near Edinburgh, 

 which may be compared with those at Rome. The mean of 

 10 m. and a., and of 8 m. and a., both give nearly the mean 

 of the twenty- four hours. 



