Science: Plantarium

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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