Prussia. — Berlin. 



LVII. 



Lat. 52° 30' N. 



629 



Long. 13° 24' 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. 



F 



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



65 



