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Vou. IX. DETROIT, MAY, 1889. No. 5 
ORIGINAL COMMUNICATIONS. 
CONCERNING THE DIFFERENTIATION OF BLACK PIG- 
MENT IN THE LIVER, SPLEEN AND KIDNEYS, 
FROM COAL-DUST DEPOSITS.* 
FREDERICK GAERTNER, 
A. M., M. D., UNIVERSITY STRASSBURG, GERMANY; M. D., ST. LOUIS MED. COLLEGE; A, B., MOUND 
CITY COLLEGE, ST. LOUIS; CERTIFICATE ILLINOIS STATE BOARD OF HEALTH; CERTIFI- 
CATE Or ENDORSEMENT FROM UNIVERSITY OF PENNSYLVANIA; MEMBER IRON CITY 
MICROSCOPICAL SOCIETY, AND OF THE AMERICAN SOCIETY OF MICROSCOP- 
ISTS; MEMBER GERMAN SOCIETY PHYSICIANS AND SURGEONS OF 
BERLIN; HON. MEMBER OF PHYSICIANS AND SURGEONS 
OF VIENNA; CORRESPONDING PHYSICIAN TO THE 
STRASSBURG PATHOLOGICAL SOCIETY, 
ETC., ETC. 
ANY anatomists and pathologists have recently been engaged 
in trying to solve the problem, how the black pigmentation 
which is frequently observed in the liver, spleen and kidneys origin- 
ates; if it can be looked upon as a transportation of black sub- 
stances from other localities, or as an expression of dyscrasia, 
especially malarial-dyscrasia. 
In the first dicennary of the present century this melanosed 
condition was considered quite normal, but since, in 1847, by means 
of the microscope, pigment was found in the spleen, and at the same 
time was also discovered in the blood of the cadaver, the belief 
arose that it might have been brought about by intermittent fever, 
and the discoloration observed in melanzemia was denominated 
“* Melanotic Pigmentation.” 
" *This article is a translation by the author of his original paper, read before the 
Medical Faculty of the Kaiser-Wilhelms-Universitate, Strassburg, Germany, preparatory 
to the examination for an ad eunden Degree, and an Honorary Diploma of Doctorem- 
Medicine-Creat. 
