Photographs should be unmounted glossy prints of a size to fit one or two columns of the Journal. The figure number, the name of the first author and an indication of the top should be written lightly on the back of each photograph with a soft pencil. Both colour prints and transparencies should be sent. Abbreviations should not be used. The magnification and staining techniques should be indicated for micrographs.
Authors are responsible for the accuracy of the references.
They should be cited in the text by Arabic superscript numbers placed after punctuation marks. Multiple citations in support of a single statement should be avoided. Material submitted for publication, unpublished material and personal communications should be incorporated in the text. References should be typed in the style used in this issue of the Journal and should be numbered in the order in which they appear in the text. Proofs must be returned within 48 hours.