Any explanation essential for understanding the table should be given as a footnote below the table. Lettering in the figures should be proportional to the size of the figure to ensure legibility after reduction. If a scale is needed for the figure, use a bar scale rather than a numerical scale that would need to be recalculated and changed after reduction. All figures should be numbered in arabic numerals and mentioned in the text. A list of figure captions should be supplied on a separate sheet.
Photographs are only acceptable if they have good contrast and intensity.
Sharp and glossy copies are required. Reproductions of photographs already printed cannot be accepted. Colour illustrations may be published at the author's expense. Formulae Formulae should be typed with ample space. Subscripts and superscripts should be clearly indicated.