Bulletin - Bureau of Chemistry Volume 130-141

Bulletin - Bureau of Chemistry Volume 130-141

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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. 1910 edition. Excerpt: ...large pieces from the tablets were selected, the sur face removed with a sterilized knife, and the pieces placed in large, covered glass dishes. Inoculations of the coccus alone at room temperature developed spots about a millimeter in diameter in from two to three weeks, then increased very slowly. In about five to six weeks reddening developed, usually at places on the fish other than the points of inoculation, and after this the fish reddened fairly rapidly. Fish inoculated with the bacillus developed clear, jelly-like colonies i from one-half to one and a half millimeters in diameter in from two to three weeks. Sometimes growth would cease, or there might be a slight development. Then, as with the fish inoculated with the coccus, reddening developed, usually on other parts, and proceeded in a similar manner. lrVhen the coccus and bacillus were used together, at first there developed a colony having a red center and a clear, jelly-like envelope, after which a general reddening developed, sometimes at the point of inoculation, sometimes at other points. Development from inoculation with the mold was very uncertain. On some of the fish many small white dry-looking colonies formed; on other pieces no development took place. The time of development was practically the same as for the coccus and bacillus. MICROSCOPIC EXAMINATION. Examination of the early stage of the reddening when a small colony only had developed at the point of inoculation gave the coccus alone, or the coccus with but a few bacilli, and possibly a few of the oidia of the mold; as the reddening increased, however, the number of the bacilli and oidia increased. A similar condition was found when the bacilli were used for inoculation. The transparent colony consisted of the...show more

Product details

  • Paperback | 472 pages
  • 189 x 246 x 24mm | 835g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236993489
  • 9781236993489