The proceedings of the annual Laurentian Hormone Conference have established themselves as one of the most authoritative sources of information on the experimental and clinical aspects of endocrinology available today. The report of the fifth conference proves to be no exception.
Touching on a borderline aspect of endocrinology, the paper by Tainter and Luduena on sympathetic hormonal transmission and the discussion by Gerard on the acetylcholine system in neural function will be of interest to physiologists and pharmacologists as well as to endocrinologists. Tainter's paper is largely a review of present concepts of sympathetic nerve transmission, and little new information is added. It is valuable, however, because it attempts to assemble all the known facts regarding the humoral mediation of nerve impulses in this system and to present a unified hypothesis to account for these facts. The discussions by Bacq, Bülbring and Raab are valuable additions to the paper. The