The Practitioner Volume 33

The Practitioner Volume 33

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1884 edition. Excerpt: ...mucous membrane of the fourth stomach near the pylorus, it being continued along the duodenum and small intestine; the erosion being specially marked in Peyer's patches and solitary glands; the mesenteric glands were also enlarged. If old spores were given to the sheep, death occurred just the same, though the interval that elapsed between their administration and death was longer. To uphold the process of "animal vaccination" Pasteur asserted that natural infection was much less deadly than the inoculation practised with virulent anthrax bacilli. But Koch, Gatfky, and Loffler, on the view that the above is the natural manner of infection, found that it is the reverse; thus, they gave spores in food to sheep protected from ordinary anthrax bacilli by previous vaccinations, and yet a high percentage of deaths occurred. They have examined some of the "vaccins" supplied by Pasteur'_s agent. The " vaccin premier" killed mice alone, the " vaccin deuxieme" mice and guinea-pigs, whilst several tubes were contaminated with bacteria: results exactly confirmatory of Klein's with the same " vaccins." But the "vaccins" were not of the uniform virulence so shortly expressed above, nor did they confer immunity upon sheep. As an explanation of the fact that in several cultivations of the same bacillus, under the same conditions as far as possible, and of the same age, the virulence differed to some extent in the " cultures." This is due to slight variations of temperature, for after six days at 4:2'8 C. guniea-pigs were no longer killed by the culture, whilst the same stage was not reached until ten days at 42'6 C. With regard to the question, whether a...show more

Product details

  • Paperback | 170 pages
  • 189 x 246 x 9mm | 313g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236841883
  • 9781236841889