Estimation of Vitamin A

Abstract

IN June of 1934 the second International Conference on Vitamin Standardisation was held in London, called under the auspices of the Permanent Commission on Biological Standardisation of the Health Organisation of the League of Nations. This Conference made certain recommendations, of which many, particularly those concerned with vitamin assay, were held to be of a provisional nature. It is a little difficult to know at exactly what point these recommendations became something more, and were to be regarded as ” officially” adopted by the nations represented on the Health Organisation. It is, however, generally assumed that this recognition dates from the appearance of the Report of the Conference in the Quarterly Bulletin of the Health Organisation; this publication occurred towards the end of 1934 as Extract No. 15 of vol. III of the Bulletin.