Ohservations of the Transit of Mercury . 201 



dition so large a part of its equipment : also to the 

 Faculty of the Physical Department of Union College, in 

 granting so freely the use of scientific apparatus : and to 

 Principal M. E. Gates, of the Albany Academy, for the 

 use of the Dolland telescope. My thanks are due in like 

 manner to the members of the party for their hearty 

 cooperation in attaining the objects of the expedition. 

 I am Sir, 



Yours, very respectfully, 

 Olin H. Landreth, 



Asst. Ast. Dudley Observatory. 



Prof. Lewis Boss, 



Director of Dudley Observatory. 



Tram, ijc] 26 



