Submission of digital images can mean more efficient production. Explanations to figures, furnished as legends, should not be repeated in the text. Numerical data given in graphs or tables must not be duplicated. All figures, whether photographs, graphs, or diagrams, must be mentioned in the text. On the back of each original figure, the top of the figure, the title of the paper, the author's name, and the figure number should be marked lightly in soft pencil.
All figures are to be numbered consecutively throughout and submitted separately.
Whenever possible, several figures should be grouped into a plate on one page. Please submit high-quality glossy prints in the desired final size. The inscriptions should be clearly legible. Letters 2 mm high are recommended. The publishers reserve the right to reduce or enlarge line drawings.