Clinical lectures on the principles and practice of medicine . f Hunter, in 1857 an-nounced his adhesion to the view that there were two venereal contagions,—one connected with the soft, and the other with the indurated views of Sigmund of Vienna, of Von Baerinsprung of Berlin, of62 978 DISEASES OF THE BLOOD. Kollet and Diday of Lyons, of Michaelis, and various others, all foundedon extensive observation, with numerous inoculations and experiments,are most contradictory. Whether there be one or two poisons is unsettled,and whether they are always distinct or capable of blending and
Clinical lectures on the principles and practice of medicine . f Hunter, in 1857 an-nounced his adhesion to the view that there were two venereal contagions,—one connected with the soft, and the other with the indurated views of Sigmund of Vienna, of Von Baerinsprung of Berlin, of62 978 DISEASES OF THE BLOOD. Kollet and Diday of Lyons, of Michaelis, and various others, all foundedon extensive observation, with numerous inoculations and experiments,are most contradictory. Whether there be one or two poisons is unsettled,and whether they are always distinct or capable of blending and producingmixed sores, equally uncertain. I would refer you to an excellent sum-mary of recent continental opinions by Mr. Hill (British Medical Journal,vol. ii., for 1862). See also the works of H. Lee and Thompson. In thepresent state of the question too much caution cannot be exercised informing conclusions regarding it. A few years ago my attention was directed to the skeleton of a dogin the museum of this University, which presented all the aspects of. Fig. 535, tertiary syphilis. Its history is as follows :—The dog lived in the shopof Mr. Ballantyne, eighteen years ago, in Carrubbers Close. At thattime the work carried on consisted almost exclusively in painting withvsrmilion and lackering Japan articles. The dog, who never left thepremises, was frequently seen lapping the vermilion oil paint, and therecan be no doubt that in this way there was introduced into his system aconsiderable quantity of mercury. After death the dog was cancerous-like masses were found in the lungs and internalviscera, and his skeleton was preserved. It will be seen that the shaftof the long bones and not their extremities were attacked (Fig- 535).The disease closely resembles what may be observed in many otherspecimens of so-called syphilitic disease. (See Figs. 536, 537.)Yet in this dog we have the positive proof that it was caused bymercury, as all attempts to communicat
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