641 



LXXI. 



Norway. — Christiania. Lat. 59° 55' N. Long. 10° 43' E. Grcenw. 



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

 Mean Ten:iperatures of the respective Days, Months, and of the Year. — Dove. 



Degrees of Reaumur. 



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



77 



