412 



THE POPULAR SCIENCE MONTHLY 



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Towee Telescope op the Mount Wilson Obsebvatoey. 



ism, having been tested on the Atlantic, 

 is now on a cruise around the globe 

 which will cover about 65,000 miles. 



The institution is only undertaking 

 minor work directly in physics and 

 chemistry, though these fundamental 

 sciences are concerned with the research 

 of all the departments, and in the case 

 of the nutrition laboratory, physiolog- 

 ical chemistry may be regarded as the 

 field of investigation. 



There are three departments devoted 

 to the biological sciences. The work in 

 botany has its headquarters at Tucson, 

 Ariz., where the desert conditions are 

 desirable for experimental research in 

 certain directions. In equally favora- 

 ble situation for its special work is the 

 marine biological station on one of the 

 Tortugas off the coast of Florida. The 

 station for experimental evolution at 

 Cold Spring Harbor, Long Island, has 



