Anatomy, physiology, pathology, dictionary / edited by W.A. Evans, Adolph Gehrmann, William Healy.

Date:
1906
Catalogue details

Licence: In copyright

Credit: Anatomy, physiology, pathology, dictionary / edited by W.A. Evans, Adolph Gehrmann, William Healy. Source: Wellcome Collection.

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    must be reproduced after a while or the generations of beings come to an end. The explanation is, of course, that in short-lived individuals some of the male exciting substance is actually carried along from being to being in the different generations, but the carrying along of patho- genic organisms—parasites—in this manner, is quite a different matter.—Ed.] The Blood in Yellow Fever. Early writers believed that the histologic elements of the blood were completely destroyed in yellow fever and its coagulability equally impaired. L. H. Marks,1 superintendent of the Emergency (Yellow Fever) Hospital, New Orleans, maintains that the coagulability of the blood of patients with yellow fever is normal. He has frequently noted that blood drawn from the median vein of a yellow fever patient coagulated before it could be forced out of the aspirator into a receptacle held ready to receive it; the time was not more than from three to five minutes. It was frequently necessary to add a solution of potassium oxalate to the blood before per- forming certain filtration experiments so as to overcome its readiness to coagulate. The normal coagulability of the blood in yellow fever has also been ascertained in a series of actual experiments in which the results have been recorded by means of Wright’s coagulometer. The writer mentions that in over twenty thousand ex- aminations of fresh and stained preparations of blood of yellow fever patients made by the various workers at the Emergency Hospital at New Orleans during the epidemic of 1905 not one specimen showed the slightest evidence whatsoever of corpuscular degeneration. Bedbugs and Human Diseases. Girault2 has found that the human bedbug will live, thrive and propagate when feeding on the blood of mice, bats, and probably other ani- mals living in the habitations of men. The fowl bug also wmild suck the blood of other animals. The author thinks it probable that some human diseases can be transmitted by bedbugs. Spotted Fever. Ricketts3 was unable to verify the find- (1) Jour, of Med. Sc., vol. CXXXII, No. 5, Nov., 1906. (2) Journ. Amer. Med. Assoc., July 14, 1906.