Organo-chlorine Pesticide Residues in Human Fat and Human Milk.

Tractors should be provided with safety frames that are strong enough to protect the drivers from being crushed should the vehicles overturn. I wish to thank H.M. Coroner and the Chief Constable of MidWales for the information obtained from the coroner's records and from the police reports of road-traffic accidents. I am grateful to my partners (Drs. T. Brittain and H. G. Davies), and also to Dr. Lee Shimmin, for allowing me to quote cases for which they were primarily responsible. My thanks are also due to the matron and staff of Llanidloes Hospital, where many of the patients were treated, and to Mr. H. Johnston Jones for translating the French papers. The help of Sgt. V. Davies and the local police constables is gratefully acknowledged.