Forced growth for hothouse flowers and vegetables by the use of electric light during the absence of the sun, may soon be a regular procedure with large florists and nurseries. The Westinghouse Electric and Manufacturing Co. and the Department of Agriculture of Columbia University, Prof. Hugh Findley in charge, learned how to do it in six weeks of experiments at the Peter Henderson greenhouses, Baldwin, L. I. The lights were turned on at 9 o'clock every night; turned off at 2 in the morning, giving five hours of light additional to the normal...
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