73 



OBSER V ATI ON OF DA YS 



To the above daily observations, similarly to what is explained at the end of the 

 Madeira series, a balance of corrections amounting to + 0.13 inch, has been applied to the 

 Aneroid Barometer at the station to reduce it to the Mercurial at the sea -level, and at a 

 temperature of 68 F. ; while the French temperature, having been observed at 7 A.M., has 

 had -J-th the daily range added to it, viz. 3, to reduce it to the mean of 24 hours. 



