Papers should be typewritten, double-spaced on one side of the paper, with wide margins. The abstract, which will precede each article, should be 225 words or less and should be typed on a separate sheet. Tables are to be typed on separate sheets and numbered with Arabic numerals. Each table should contain an explanatory title that would make reference to the text unnecessary. These should be numbered with Arabic numeral and should be mentioned consecutively in the text.
Legends are to be typed together on a separate sheet.
Illustrations, drawn with a lettering set, should be in a finished form ready for the printer. Photographs should be submitted as glossy prints not marred by staples, paper clips or pencil marks. For the best reproduction of halftones, provide clear, sharp photographs with adequate contrast. The best results will be obtained if authors match the contrast and density of all figures appearing on a single plate. If this is not possible, please provide unmounted original art.