At the time of the introduction of the ever-memorable Koch's lymph, there were included under the head of poisonings by this drug vascular lesions, as I have mentioned above, acute arteritis, arterio-sclerosis, changes in the vessels of the heart and the kidneys, and acute nephritis. Apropos of acute nephritis, the supposition was that the kidney became congested because of the presence in that part of certain tubercular islets, and that the kidney responded, like the tuberculous lung, under the influence of the _Tuberculin_, by acute congestion. However this might be, these vascular lesions drew attention to the homoeopathicity of Koch's lymph in nephritis. Dr. Jousset has experimented in it with encouraging results, using homoeopathic dilutions, in Bright's disease; and at the meeting of the Société Homoeopathique Francaise on April 18, 1895, Drs. Tessier, Silva and Jousset, father and son, mentioned the diminution of albumen in cases of chronic and incurable nephritis, and the appearance of that substance in acute cases. Dr. Arnulphy, in a series of articles in the Chicago _Clinique_, which I have read attentively, speaks favorably of Koch's lymph in homoeopathic dilutions in cases of tuberculosis. Personally I have not used it, and I am loth to pass judgment on observations recorded in every good faith. I would merely remark to my honorable colleague that Koch's lymph was used in our school in all the homoeopathic dilutions possible at the moment of its far-resounding discovery--a fact which he should know as well as myself. To mention only one instance--Drs. Simon, V. L. Simon Boyer and Chancerel used the drug at the Hahnemann Hospital in Paris at the time of the arrival in France of the first consignment of lymph from Germany; and I am nearly certain that there is not at this time a single country where homoeopathists have not used this remedy in all the infinitesimal dilutions. Homoeopaths and allopaths have actually taken pretty much the same side as regards the primitive formula put forward by Koch (I am not now speaking of trials of new tuberculins); and Dr. Arnulphy would be fortunate enough were he able to revive its credit after its several years' oblivion as a cure of tuberculosis. Clinically this lymph of Koch has led to wonderful cures in lobular pneumonia, for it produces pneumonia, broncho pneumonia, and congestion of the lungs in the tuberculous patient. Its homoeopathic action would thus appear more trustworthy than its isopathic, and Dr. Arnulphy makes this remark: "I make bold to state that no single remedy in our materia medica, not excepting _Ipecac_, _Iodine_, _Tartar emetic_, and even _Phosphorus_, approaches the singular efficacy of _Tuberculin_ in well-authenticated cases of that affection (broncho pneumonia, be it) in the child, the adult, or the aged. Its rapidity of action in some cases is little short of wonderful, and all who have used it in this line are unanimous in their unbounded praise of its working."