nous point upon a it to Dr. C. V. Riley, entomologist, of the Department rangement permits of directly reading the mean time. screen carried by the circle, H, and upon which has of Agriculture, who has favored us with the following: Such, for example, is the case with the dial devised by been… … not by a simple rod, but by an enlargement, B, of the let us place the horary circle upon the midday of the THE HICKORY BARK BORER. (Scolytus 4-spinosus.) style, the section of which is given by the well known instrument, and let us give the axis, A B, an inclina- curve of the equation of the time.…
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