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March 5, 1898

Twentieth Century Practice; An International Encyclopedia of Modern Medical Science

JAMA. 1898;XXX(10):568-569. doi:10.1001/jama.1898.02440620056023

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The chapters of this volume are by P. Brouardel, M.D., of Paris; Jules Comby, M.D., Paris; Harold C. Ernst, M.D., Boston; Ernest Hart, D.C.L., London; John Wm. Moore, M.D., Dublin; Solomon C. Smith, M.D., London; Victor C. Vaughan, M.D., Ann Arbor, and Lawson Williams, M.D. London.

The articles are as follows: Ptomains, toxins and leucomains; infection and immunity; water-borne diseases; the duration of the period of incubation and infectiousness in the acute specific diseases, smallpox, vaccinia, mumps. In Dr. Comby's article on mumps, he quotes Catrin's observations on Val de Grâce in 1892. He says: "Of ninety-five cases of mumps, which formed the basis of our studies, we obtained positive results in sixty-seven. Thirty-nine out of fifty-six times we obtained pure cultures by puncture of the parotid glands; twice the cultures were impure, and fifteen times no result was obtained. These negatives may be explained by the occasional absence of

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