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<dl><dd>24 pages : 23 cm</dd>
<dd>Cover title</dd>
<dd>Preparation necessary for frost prevention -- Materials to be used for fuel -- Materials for starting fires -- Manner of distributing the materials in the orchard -- Quantity of material to be used for each fire -- Cost of materials for firing an acre -- Necessity of understanding weather conditions -- Meteorological data obtained in the Rogue River Valley -- Weather conditions producing spring frosts in the Rogue River Valley -- Injurious temperatures -- Results of the work -- Value of firing the orchards when the cost is compared with the value of the crop -- Practical suggestions on the use of psychrometer and other meteorological instruments</dd></dl><br>Subjects: Fruit -- Frost protection -- Northwestern States; Fruit -- Frost protection; United States -- Northwestern States</div>
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O'Gara, P. J. (Patrick Joseph), 1872-1927</div>
Internet Archive identifier