glands, wllich miglht subsequently be aggravated by psychic trauma or conflict, or by other toxins. In dementia praecox there seemcd to be both physical and psychic factors. If this idea of the origin were correct, we must look for prevenltion, not to the school doctor, but to the ante-natal clinic.POISONING BY ARSINE.

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VITAMIN B, IN DIPHTHERIA TMLE BRJTOiL 359 MEDICAL JOtJRNAVl (lepressing effect of colostomy has been an important contribLutory factor, but the chief reason, I think, is the absence of riectal function, which in those without colostomy serves as a valLuable guide in the determination of the amount of treatnment. Taking a broad view I am convinced that most of these patients would have been happier withouLt colostomy and would probably have lived as long. Summary of Conclusions The valtue of colostomy in non-obstructive cases of inoperable carcinoma of the rectum is doubtful. Except in advanced cases, x-ray treatment provides a nmethod of restoring rectal function to a degree compatible with an active life for a considerable period without resort to colostomy. It has the further advantages of caulsing the minimum of discomfort and avoiding any operative procedure.

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