J Lenihan 
Crumbs of Creation 
Trace elements in history, medicine, industry, crime and folklore

Of the 90 chemical elements that occur in nature, only a dozen are found in easily measurable amounts in the human body. The rest are trace elements, present at such low concentrations that most of them were, until quite recently, beyond the reach of detection. The Crumbs of Creation reviews the absorbing story of trace elements in medicine, history, industry, crime, and folklore, showing how the study of their properties can help us survive through a better understanding and control of our environment. Written in an easy-to-read, entertaining style, the book consists of interrelated anecdotes grouped together in relevant chapters. Although readers will derive much entertainment from this book, there is an underlying seriousness to the topics.