Abstract:number. Line drawings should be drawn boldly in black ink on stout white paper, feint-ruled graph paper or tracing paper. Photographs should be glossy prints of good contrast and well matched for tonal range. The place of an illustration should be indicated in the margin of the text. Each illustration must carry the name of the author and article, its number, and a caption. Xerox copies may be sent when the article is first submitted for consideration.
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