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Show ou R F1I LIST IKES FROST TEST LOGAN, May 30. An illustrated article, ar-ticle, describing a contrivance being used by tho Utah Agricultural college, designed to freeze whole trees, to discover, dis-cover, under actual orchard conditions, condi-tions, the frost danger point, appears in the current issue of the Popular Science Monthly. Briefly, the machine consists of a, huge galvanized iron tank, largo enough to inclose the entire en-tire tree. Tho tank is made In two hollow cylinders, each fastened to a movable wooden base. A half of the tank is placed on either side of tho trees to bo frozen and then tho two sections aro drawn together. The tank is double wulled,'the space between the two walls being about four inches. Ice, with salt, is placed between the walls and over the lid, which rests upon tho innor wall. The temperature inside is regulated by pumping warm air in as it Is needed. An electric fan keeps the temperature even Inside the tank, and four self-registering self-registering weather bureau thermometers thermome-ters and a thermograph, hung'from different dif-ferent branches of the tree, keep an acourato record of the temperature within tho tank. Tho frost resistance of buds can bo determined by this method and data collected that will toll when smudgo pots or other artificial means of orchard or-chard heating will be of use. Dr. Frank L. West is In chargo of tho experiments being oarried on in this work. |