Hard to stomach

From John Davies Your special report on faecal transplants (1 March, p 10) mentioned “a nasogastric tube, which runs from the nose down through the stomach and into the colon”. Having swallowed jejunal tubes to access the upper part of the small intestine, I can tell you that passing an oral or nasal tube that could reach the colon would need to be another 6 metres long, and a task of Sisyphean magnitude to pass! Lancaster, UK