The microscopic organisms found in the blood of man and animals, and their relation to disease / by Timothy Richards Lewis.

  • Lewis, T. R. (Timothy Richards), 1841-1886.
Date:
1879
Catalogue details

Licence: Public Domain Mark

Credit: The microscopic organisms found in the blood of man and animals, and their relation to disease / by Timothy Richards Lewis. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    observei* *s peculiarly qualified to deal with the difTerent phases of the extremely complex jfiienomena which come under notice. In the first instance, notice will be taken of the principal observations which are considered to give support to ]VIM. Davaine and Pasteur’s views. In 1875 Professor Ferdinand Cohn published the result of his examinations of these or- Professor Cohn’s Bacillus anthra- cis. ganisms, and ha^dng pronounced them to be bacilli, sug- gested that they should bear the name Bacillus anthracis} This term has been generally adopted in Germany and Eng- land, as, notwithstanding the theory im- phed in both words, it is convenient to have some such brief designation. Cohn’s figure of this bacillus is reproduced (fig. 3), as a graphic representation from the hand of so accomplished a mycologist, is of special value, and wall serve to aid in form- ing an estimate of the relation of these organisms to others found under other, though somewhat similar, conditions. Fig. 3 ... X 600 diam. Bacillus anthracis, obtained, after death, in the blood of an ox which had died of splenic disease. (After Cohn.) In 1876 an important contribution to our knowledge of these organisms was published by Dr. Koch of AVollstein (Posen), Dr. Koch’s researches: some ob- , hj l • jections which had been raised wlio had had excellent Opportunities or studying against Davaine’s conclusions. the disease.* Koch had observed that several of the statements and conclusions of M. Davaine had been called in question. Some observers had been able to induce fatal charbon by inoculating animals with bacteridial blood without obtaining any bacteridia* in the blood of the animal thus affected, although the latter (bacteridia-free) blood liad also in- duced the disease, and, moreover, given rise to bacteridia in the third animal, although none had heen present in the second. Others, again, maintained that the disease was not due solely to contagion, but was, somehow, dependent on the soil, seeing that the disease was only endemic in moist, swampy districts, valleys. * Cobii’a Beitrage zur Biologic der Pflnnzen, Band. 1, HeR. 3, 18/5. * Cobii’s Beitrage, Bitud. 11, llcft. 2.