Proceedings of the Royal Society of London; Containing Papers of a Biological Character Volume 79

Proceedings of the Royal Society of London; Containing Papers of a Biological Character Volume 79

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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. 1907 edition. Excerpt: ... medium were examined, the period of observation extending over four weeks. Of the 49 glucosides examined, the following showed no reaction which could be ascribed to fermentation: --The glucoside plumierid gave a dark green coloration with B. capsiilatus and to a less extent with B. lactis aerogenes, B. cloacae, and B. pneumoniae, but no real fermentation was observed. The remaining 27 glucosides showing some degree of fermentation with one or more of the test micro-organisms were as follows: --In addition to the 18 test bacteria mentioned above, experiments were also carried out in the glucoside media with 26 other members of the typhoidcoli group. The latter cultures were isolated in the London Hospital from cases mostly of cystitis and colitis. The results obtained with the whole 44 bacteria are set forth in the accompanying table, the type cultures are distinguished by an asterisk. The sign + indicates a positive reaction, the sign--indicates that there was no change in the glucoside under observation. Vacant spaces indicate that no tests were made, the quantities of glucoside available being insufficient. "A " is used to denote acid formation; "G" gas formation. In the table it can be seen that the bacteria have been subdivided into seven sub-groups according to their fermentative action on glucose, lactose, dulcite, and saccharose. Vol. Lxxix.--B. 2 B Ononin. Ericolin. Digitalein. Helleborein. Cy clam in. Apiin. Hederaglucoside. Tannin. Jalapin. Scammonin. Colocynthin. Plumierid. Absynthin. Quercitrin. Hesperidin. Convallarin. Quabin. Scopolin. Frangulic acid. Smilacin. Condurangin. Convolvulin. The last four of these sub-groups correspond to the four groups of MacConkey. On looking at the table it is apparent--1....show more

Product details

  • Paperback | 250 pages
  • 189 x 246 x 13mm | 454g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236971590
  • 9781236971593