XLVII. 621 



Belgium. — Brussels. Lat. 50° 51' N. Long. 4° 22' E. Greenw. 



Corrections to be applied to the Means of the Hours of Observation to obtain the true 

 Mean Temperatures of the respective Days, Months, and of the Year. — Dove. 



Degrees of Reaumur. 



The numbers without sign must be added ; those with the sign — must be subtracted 



57 



