"Blood Viscosity Factors" brings together a series of essays on the impact of various abnormalities on blood viscosity factors. It contains several hundred references to already published work in the field. Beginning with the finding that red blood cells proliferate in shape and are not just one toroidally shaped horde, the work offers unique insights into the role of ageing and disease. The work of Dr Simpson corrects the record and offers tantalising possibilities for the future. One result of the move to targeted and commercial research has been to stunt the growth of whole fields of inquiry in favour of more convenient or competitive ways of looking at a situation. The real puzzle is that the work has been done and a substantial body of peer reviewed publications attest to the quality and depth of the findings. The book is of interest to those readers who prefer a more holistic view of science and the world, than is currently offered by the standard texts.