The following translation of Mr. Doctor McDill represents perfectly the original treatise.
PROF. EHRLICH for PROF. KOCH.
Berlin, Jan. 17, 1891.
Since the publication, two months ago, (see Deutsche Med. Wochenschr., No. 46 a) of my experiments with a new method of cure for tuberculosis, many physicians have obtained the remedy and have thereby been enabled to become acquanted with its properties by personal experiences. As far as I review the publications which have appeared, together with the communications to me by letter on this subject, my statements have, upon the whole, found full corroboration.
It may be considered as generally accepted that the remedy has a specific action upon tuberculous tissue and that it consequently can be utilized as a very subtle and reliable reagent for the bringing to light of the hidden, and the diagnosing of the doubtful tuberculosis processes. Also regarding the curative effect of the