290 TRANSMISSIBILITY OF TINEA TONSURANS. 
which the pony came were affected with ringworm, subsequent 
to the appearance of the disease in that animal. 
What is still more interesting, however, is the fact that 
the man who was in special charge of the pony at the 
Veterinary College soon became affected (within ten days 
after taking charge of it) with tinea circinata, the fronts 
and backs of both arms being covered with patches, as well 
as the hacks of the fingers; whilst subsequently the disease 
showed itself in two men who assisted to wash the pony 
before active treatment was employed, and in a third who 
held the pony and had given it drenches. In one of the two 
first men the patches occurred on the front of the arm in the 
form of large, irregularly circular patches, as well as smaller 
ones; these were raised, red, scaly, and itchy centres of tinea 
circinata with exaggerated features. In the second the 
disease assumed the form of what might be aptly styled 
“ herpes circinatus,” being composed of circles the size of a 
sixpence and a shilling, some ten or a dozen on each arm, in 
which the characters of well-marked herpes— i. e . distinct 
large vesicles seated in an inflamed base—were observable, 
especially at the commencement of the patches. The same 
man had a patch of sycosis on the left half of the upper lip. 
A specimen of the hair from the moustache being placed 
under the microscope, left no doubt as to the parasitic nature 
of the disease. In the third man the patches were small and 
few. 
Taking all the cases of the seven men together, they had 
these peculiarities in common; the inflammatory aspect was 
more severe, the infiltration more decided, the extent of the 
eruption greater, and the herpetic character, when the earlier 
stages were observed, not at all abortive, but more distinct 
than usual. Moreover, in one case, the fungus, luxuriating 
amid the textures of the skin, set up so much irritation as to 
induce pustulation in place of the ordinary herpetic vesicula- 
tion in certain of the patches. In fact, as Dr. Fox remarks, 
the features of tinea circinata were not only peculiarly well 
marked, but exaggerated; a circumstance explained, as 
already mentioned, by the plentiful implantation of the 
fungus germs in unusual abundance and luxuriance, and the 
setting-up, by its vigorous growth, of an unusual amount of 
irritation. So that, in fact, the disease looked like an 
ekzema, and might readily have been mistaken for the same. 
Dr. Fox asserts that there are, indeed, cases which are ordi¬ 
narily mistaken for ekzema in practice, but which are in 
reality exaggerated tinea tonsurans. 
A portion of the epithelium from a patch on the arm of the 
