MASSACHUSETTS INSTITUTE OF TECHNOLOGY, 

 BOSTON, MASS. 



June 20, 1906. 



Dr. George G. Kennedy, 



Readville, Mass. 



My dear Sir ; 



In behalf of the Geological Department of the 

 Institute of Technology I take this opportunity of thanking 

 you most heartily for your generous share in the subscrip- 

 tion of seven hundred dollars, raised by Mr. George G. 

 Crocker, which has made Professor Johnson's expedition 

 possible and has furnished the Institute with a new and 

 valuable piece of apparatus. 



Pro fens or Johnson and his colleague, Dr. Shinier, 

 have already started for the west and are now in Arizona. 

 Dr. Johnson is a man in whom I have every confidence and 

 his Journey cannot be otherwise than productive. 



Very faithfully yours, 



