Page:Popular Science Monthly Volume 78.djvu/422

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PSM V78 D422 Tower telescope of the mount wilson observatory.png
Tower Telescope of the Mount Wilson Observatory.

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, physiological 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 favorable 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