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Show ELECTRICITY TO AID CROPS iScIentiflc Gardening Produces Two Batches of Lettuce to One by Daylight. Xarger and better crops of vegetables can be produced with the aid of electric elec-tric lights, says a recent report of the International Institute of Agriculture, which describes experiments made In iforcing lettuce for the market. Five electric lamps were so ar-'ranged ar-'ranged over a plot of lettuce as to diffuse dif-fuse uniform light, the lamps being turned on daily for about six hours, beginning at dusk. After 12 days the lettuce so treated had two and a half times as many fresh leaves as other Iheads which had been planted at the came time but which had not been exposed to the electric light The heads of forced lettuce were described :ln the report as larger and firmer and they realized better prices when sold. Plants exposed only to daylight required re-quired from four to five weeks, or double the time, to reach this development, develop-ment, so that, with the use of electric light, two crops of lettuce could be Talsed In the time required to raise one under ordinary conditions. After seven weeks of electrical Illumination Il-lumination a comparison made between be-tween the "illuminated" plants and a similar number of plants not lllumi-mated lllumi-mated showed a 50 per cent advantage 5n weight In favor of the former |