1. The chemistry and pharmacology of a new polymer, polyglycolic acid, are described. Experimental studies have shown this substance to be a suitable suture material in animals. 2. The present study details experience with the material in 120 patients in a variety of general surgical operations. 3. The results show polyglycolic acid sutures to be superior to catgut and to fulfil the criteria laid down for the ideal absorbable material.

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553implications of the findings are discussed. Modifications of the traditional technique are suggested in order to utilize better the cumulative effect of repeated skin disinfection.Acknowledgements.-We wish to thank Messrs.

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