In Yonkers, N. Y., on the banks of the broad Hudson, is the Boyce Thompson Institute for Plant Research. Since last autumn the Institute's scientists and technicians have been at work on a greenhouse heated & lighted by electric lamps. Last week Director William Crocker announced that the electric greenhouse was no longer a hopeful experiment but a successful fact.
The greenhouse, 19 x 8 ft., has insulating walls consisting of two iron sheets with the 6-in. space between them filled by tightly packed sawdust. Only the south side of its roof is of...
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