This book is long out of print but still obtainable second-hand and is well worth a look. It was originally published alongside a TV documentary series, and makes one sigh for the science documentaries that used to be. Written for a general audience, the book covers in a non-sensational, reasonably detailed way the microscopic and macroscopic flora and fauna of the human skin, hair, eyes and external orifices, their ecology and also anything else interesting or significant about them (inevitably, including health and economics). There is, for example, a species of mite which lives only on eyelashes. The microphotographs in particular are excellent, if few in number, including one of house dust mites grazing like sheep. 176pp.; b/w plates and line drawings; index; short bibliography.