Report on the etiology and prevention of yellow fever . us appearance. Some are homogeneous and translucent, and it ETIOLOGY AND PREVENTION OF YELLOW FEVER. 151 may be more or less colored witli blood pigment; tbese are corai)osed of an albumin-0118 material. Otber infarctions are formed of tbe granular ddbris of the renal epithe-lium ; or we may have a mixture of the granular aud albuminous material, in whichcase the latter forms a matrix in AThich the granules are imbedded. These infarc-tions correspond with the casts foimd in the nriue; those of a granular character aremost abundant, and in
Report on the etiology and prevention of yellow fever . us appearance. Some are homogeneous and translucent, and it ETIOLOGY AND PREVENTION OF YELLOW FEVER. 151 may be more or less colored witli blood pigment; tbese are corai)osed of an albumin-0118 material. Otber infarctions are formed of tbe granular ddbris of the renal epithe-lium ; or we may have a mixture of the granular aud albuminous material, in whichcase the latter forms a matrix in AThich the granules are imbedded. These infarc-tions correspond with the casts foimd in the nriue; those of a granular character aremost abundant, and in them the granules often have a fatty appearance. There arealso accumulations which dilfer from these in the fact that they are deeply stainedby the aniline colors. They seem to be made up of the nuclei of the cells, sometimesintact, although swollen and compressed; more commonly massed together, or brokeninto regular fragments. At least this seems to be the most probable interpretation ofthose infarctions which are stained by nuclear staining Fig. 9.—Acute parencliyraatous nephritis, a, hyaline; b, granular infarction. From a case of yellow fever. Havana, 1887. The supra-renal bodies, according to Schmidt, undergo pathological changes simi-lar to those observed in other organs, consisting in the infiltration of fat audhieraoglobin, derived from the blood, and preceded by hypertemia of the organ. ** * The infiltration or extravasation of hiemoglobin absorbed by the cells is greaterand more general here than has been observed in any other organ. Almost in everycase examined it involved the whole medullary substance, from which it extendedinto the inner and middle layer, sometimes even into portions of the outer layer ofthe cortical substance. The degree of this pigmented infiltration is sufficiently greatto be always distinguished by its brown color in sections of fresh specimens; in somecases, even, it appears dark brown. The spleen does not undergo any marked altera
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