Each original figure should be numbered and submitted on a separate page. A list of figure captions should be submitted on a separate page. Each figure should be cited in the text. Each figure should have a brief legend, as appropriate. Labels on graphs should be placed parallel to the axes, the first letter of each word capitalized.
Line art is preferred.
Photographs will be accepted only if they are essential to understanding. If photographs must be included, they must be high quality, black and white glossy prints with sharp detail and good contrast. Original tables should be numbered and submitted with the manuscript on a separate page. Each table should be cited in the text. Each column in a table should be given a heading.