This avoids problems if the illustration needs to be reduced. Each illustration should have a self-explanatory caption. The captions to all illustrations should be typed on a separate sheet of the manuscript. Explanations should be given in the typewritten legend. The text in the illustration itself should be kept to a minimum.
Photographs are only acceptable if they have good contrast and intensity.
Only sharp and glossy original photographs without screen can be satisfactorily reproduced. Reproductions of photographs which have already appeared in print cannot be accepted. Colour illustrations cannot usually be included, unless the cost of their reproduction is paid for by the author. All publications cited in the text should be presented in a list of references following the text of the manuscript. The manuscript should be carefully checked to ensure that the spelling of the authors' names is exactly the same in the text as in the reference list, and that the reference list is complete.