Cohnheim, a pioneer pathologist, was Virchow’s most distinguished pupil. Among his many valuable experiments, the greatest was perhaps his successful inoculation of tuberculosis in the anterior chamber of the rabbit’s eye, 1877, an account of which is included in the above work. This proved that tuberculous material derived from different sources owed its infectiveness to the same contagious factor. The book first appeared in quarto, 29 pp., 1879, with a Latin imprint: Lipsiae, typis A. Edelmanni. This scarce version was followed by the more common octavo (44 pp.) recorded above. An English translation is included in D. U. Cullimore’s Consumption as a contagious disease, London, [1880].