Chicago, Sept. 1, 1906.
To the Editor:
—To the extensive and rapidly growing literature of reciprocity in medical licensure may I add another contribution for the purpose of reviewing and elaborating a suggestion already made by others of a voluntary national examination and certificate?In the address published in The Journal, August 25, Dr. Harvey has forcibly set forth the difficulties which stand in the way of interstate reciprocity. The examinations given by over sixty state and territorial boards are, and of necessity must long continue to be, so diverse in character and severity as to afford no satisfactory basis for any general reciprocity. Nor is any scheme of compulsory national licensure possible under our-form of government. At the same time it is clearly the opinion of the large majority of contributors to this discussion that an examination and certificate by some central board under the control of the national