Geneticist Sarah B. Holt has written a scholarly text correlating human genetics and dermatoglyphics. The first of three major divisions leads the uninitiated reader through the unfamiliar terrain of dermal ridges. A plethora of clear diagrams illuminates the way. Section 2 deals with the quantitative genetics of dermatoglyphics, and section 3 is a fascinating discussion which correlates developmental abnormalities with distortions in dermal ridging. This is a unique book, revealing one of the lesser known bridges between genetics and clinical medicine.