THE MONT BLANC OBSERVATORY. 263 



Independently of these observations I have also given some attention 

 to the transparency of the atmosphere of this almost nnicjue station, 

 and to the atmospheric phenomena which are inclnded in snch an 

 extensive view, and across snch a great thickness. I shall speak of 

 this on a fntnre occasion. 



The observatory of conrse is not completed. There yet remains 

 mnch to be done independently of interior arrangements and the instal- 

 lation of the instrnme'nts; l)ut the great difticnlty luis been overcome, 

 for we are free to work, and no longer have to reckon with the snow- 

 storms; the rest will follow in due conrse. 



I liope that the observatory will soon be able to offer a much more 

 comfortable sojourn than I have had there; but that will depend upon 

 the weather. Be this as it may, I regret nothing. 1 strongly wished 

 to see our work in position^ and still more fervently desired to inau- 

 gurate it by observations which are ever in my mind. I am fortunate 

 at having been able to realize my desires in spite of some difficulties. 



