Behaviour Therapy Techniques: A Guide to The Treatment of Neuroses

necessarily simple. It is fair assumption that prospective readers understand the gas laws, equivalent pressures and other basic facts. The chapter on Signs and Symptoms dwells a little lengthily on psychomotor aspects and in this chapter Dr Bennett mentions that the noble gases possess narcotic properties, an interesting fact for anaesthetists. The causes of narcosis are grouped as one chapter and include pressure alone, psychological origins, raised partial pressures of oxygen or inert gases. In the following chapter, Dr Bennett indicates that tissue carbon dioxide retention is not the prime cause of compressed air intoxication though increased oxygen partial pressure and carbon dioxide retention are synergistic. The chapter on Electrical Activity of the Brain and Inert Gas Narcosis is well done, this being Dr Bennett's forte. Other chapters in the book include Possible Mechanisms of Narcosis, Action of Gases on Synaptic Mechanisms, Prevention of Narcosis, and Recent Developments in the Field. Apart from small points, the book is well compiled, with a minimum of first edition errors. The illustrations and graphs are clear, while the references are comprehensive and detailed. This is clearly a book to be recommended to every scientist interested in underwater research, hyperbaric medicine and anaesthesia, and Dr Bennett should be encouraged with any further publication.