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January 7, 1893


Author Affiliations


JAMA. 1893;XX(1):17-20. doi:10.1001/jama.1893.02420280025001h


From 1874 to 1886, a period of twelve years there passed under my observation four hundred ninety-eight cases of pneumonic fever. These were encountered in private family practice and in a rural neighborhood, inhabited by natives of the North of Germany and their descendants. They were, almost without exception, members of families in good circumstances, occupied comfortable dwellings, dressed and lived well and were'exposed, to an extent much less than ordinarily, to the inclemencies of the weather, the hardships of excessive toil and the cares of want. They were, moreover, of a parentage largely free from pulmonary consumption and cancer and wholly free from syphilitic taint.

Carefully kept clinical histories of the cases above referred to have been preserved and it is an analysis of these which serves as a basis for this study. In addition to this original material I have not hesitated to compare my observations and