The lettering should be in English. Use the same kind of lettering throughout. Use bar scales on all illustrations instead of numerical scales that must be changed with reduction. Each illustration should be accompanied by a caption. Put the captions on a separate list, added to the manuscript.
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 cannot usually be included, unless paid for by the author. All references made to publications 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 information given in the text is exactly the same as that given in the reference list.