Investigations into the nature, causation, and prevention of Texas or southern cattle fever : made under the direction of Dr. D.E. Salmon ... / by Theobald Smith and F.L. Kilborne.

  • Theobald Smith
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Investigations into the nature, causation, and prevention of Texas or southern cattle fever : made under the direction of Dr. D.E. Salmon ... / by Theobald Smith and F.L. Kilborne. Source: Wellcome Collection.

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    deal, therefore, with a complicated infection, in which two very differ- ent kinds of parasites play an important part. Another significant discovery, not less marvelous, is that the micro- organism which constitutes the contagion of the disease is transmitted through the egg to the young tick, and it is this, and not the adult tick carried by the Southern cattle, which finds its way upon suscepti- ble animals and causes the disease. In the absence of the tick, the disease is probably not communicable except by artificial inoculation. The accompanying report gives all the details of the investigations referred to, and will be found of the greatest interest both to the cattle- owner desirous of preserving his animals from this dangerous malady, and to the scientist who wishes to know the various methods by which contagion may be distributed. The researches have been made with great care and thoroughness, and the gentlemen who have conducted them have shown perseverance and scientific ability of the highest order. Their work, as described in these pages, has for its foundation accurate scientific experiments, and, however unexpected may be the results, these may be relied upon as furnishing the basis for the true exposition of the disease. Yery respectfully, Hon. J. M. Kusk, Secretary. D. E. Salmon, Chief of Bureau.
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