58 Loc. cit.
59 Op. cit.
60 Volksmann's klinische Vorträge, 1873, lxiv.
Schüller61 has shown that the introduction of finely divided material from a scrofulous joint—that is, from one containing tubercles—into the lungs of rabbits was followed by a tuberculosis of the tracheal wound, the lungs, and liver. Similar experiments with reference to the introduction of lupus-tissue produced results suggestive of tubercle, if not actually tuberculous.
61 Untersuchungen über die Enstehung und Ursachen der Skrophulösen und Tuberkulösen Gelenkleiden, 1880.
The intimacy of relation between tuberculosis and pearly distemper is a necessary result of Villemin's62 experiment, in which the rabbit became tuberculous after inoculation with fragments of the pearly tumor. Gerlach,63 and especially Schüppel,64 showed that the structure of the nodules of the pearly distemper is the same as that of the tubercles of man, and that the two diseases are identical from the histological point of view.
62 Op. cit., 537.
63 Virchow's Archiv, 1870, li. 290.
64 Ibid., 1872, lvi. 38.
From the anatomical identification and the etiological connection, as shown by Villemin, Gerlach, and Aufrecht, the pearly distemper became designated as a bovine tuberculosis.