Articles, letters and book reviews are welcome and should be sent direct to the Editor. Please read a few issues before submitting anything; articles should be informative rather than entertaining. Reports of investigations or discussions of investigative techniques are welcome as well as comment and analysis.

Contributions sent by e-mail should preferably be as attached files in RTF format. Please do not use any fancy formatting or obscure file types, as this makes it difficult to edit and format them.

Pictures are welcome, and these must be in the JPEG or GIF formats. Do not send big files, as these cause problems on my old computer. High-resolution pictures are not needed; 100 dots per inch is quite sufficient. Also, please do not embed pictures in the text; send them as separate files and list them and their captions at the end of your text. It is the reponsibility of authors to obtain any necessary permission for the use of coyright pictures.

Copyright of all items published rests with their authors. The Supplement is not a subscription magazine and all issues are freely available on this web site, so no payments can be made for the publication of any material and we make no requests for donations.

This publication is not regular, but is issued whenever sufficient suitable material is available. There is a printed edition which is circulated to persons who contribute material for publication or who exchange similar publications with us.

It would be appreciated if readers who have comments about the contents would send them direct to the Editor for publication as letters instead of only discussing them on blogs or mailing lists.