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ORIGINAL ARTICLES and LETTERS forwarded for publication are understood to be oflered to the BRITISH MZDICAL JOURNAL alone unless the contrary be stated. CORRESPONDENTS who wish notice to be taken of their communications should authenticate them with their names-of course not necessarily for publication. As, owing to printing difficulties, the JOURNAL must be sent to press earlier than hitherto, it is essential that communications intended for the current issue should be receired by the firstdoi:10.1136/bmj.2.3273.546 fatcat:ac6g6kfz5zculgrs5zlel5b2iu