308 
D. E. SALMON. 
the ulcers are beginning to appear, is coated with smoke dust 
rich in arsenic. 
Similar lesions may be produced by the artificial application 
of arsenic. 
The breathing of arsenical dust is a frequent and recognized 
cause of ulceration of the nostrils and perforation of the septum 
in the men who work in factories where such dust is generated. 
There is a tremendous quantity of arsenic in the crusts and 
tissues of the naturally developed ulcers. 
Similar ulcers, also, develop in the nostrils of sheep which 
are feeding on the same pastures. 
These facts lead irresistibly to the conclusion that the ulcers 
are caused by arsenic; that their beginning in the summer or fall 
is dependent upon the direction of the wind currents and the 
deposit of smoke dust on the pasture grass; that their disappear¬ 
ance in the late winter or spring is due partly to feeding upon 
hay, partly to the dust being removed from the grass by the 
storms of winter and spring, and partly to the currents of air 
carrying the smoke away from the valley at that time of the year. 
REFERENCES. 
4. Peterson, Frederick, M.D., and Haines, Walter S., M.D.: Text-Book of Legal 
Medicine and Toxicology. Vol. II, p. 407. 
5. Brouardel, G.: L’Arsenicisme, p. 100. 
6. Royal Commission on Arsenical Poisoning: Second Report, Pt. 2, p. 152. 
7. Loc. cit., p. 155. 
8. Royal Commission on Arsenical Poisoning: First Report, Pt. 2, pp. 89-90. 
9. Loc. cit., p. 942. 
10. Formad, Robert J., V.M.D., M.D.: The Effect of Smelter Fumes upon the Live 
Stock Industry in the Northwest. Twenty-fifth Annual Report of the Bureau of Animal 
Industry, Washington, 1908, p. 253. 
Corrections. —In Dr. Whitehouse’s article on page 216, 
May issue, the word variety should read rarity, salt should read 
salts on page 217, and rumen should read lumen on page 218. 
The Old Frank Worth Trotting Horse Stable Filled 
With Saddle Horses. —The elegant stable, substantially built 
years ago, in West Fifty-sixth street, New York, by Mr. Frank 
Work as a home for his trotters, has been leased by several Wall 
street men, and is being used by them as a sort of private club- 
stable for their saddle horses, numbering among* them some of 
the best in the country. 
