88 



The concrete pier which is to support the 100- 

 inch telescope has already been built on Mount 

 Wilson, and the steel building, which is to be sur- 

 mounted by a revolving dome 100 feet in diameter, 

 is now being erected. It is not expected that the 

 telescope will be ready for use before 1916. 



Fin. 63. Dome for loo-inch Reflector in process of erection, 



June, 1915- 



WORK OF THE FUTURE. 



In closing this brief survey, which attempts no 

 more than to give an idea of the Observatory's 

 activities through certain typical examples, a w r ord 

 may be said regarding the future. No predictions 

 can be made as to possible new results, as the 

 capacities of the loo-inch reflector are still untried 



