The essentials of practical bacteriology : an elementary laboratory book for students and practitioners / by H. J. Curtis.

  • Curtis, Henry J.
Date:
1900
Catalogue details

Licence: In copyright

Credit: The essentials of practical bacteriology : an elementary laboratory book for students and practitioners / by H. J. Curtis. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

    106/314 (page 88)
    ESSENTIALS OF vnxoTTnAr , Ul PEACTICAL BACTERIOLOGY .^'^ ^^'-^ ^gar, the growth appears, aceordine to q.l series of superposed discs coveid w T ^ •, ^^^^^^^^^^d. as a cockade or rosette. ^^^^ arranged like a i'o^^^o, the growth of the microsporon is vprvf • , m appearing. About the tenth day Ht e brol ^ the difference in colour seeming to a e f oTdiff ' ^^i'' actions of the potatoes. At th^e end these discolorations, hkened by Sabouraud to streaks of diy blood, become the seat of aerial tufts of down, iDure white in colour. The growth of this down is always much more luxuriant when the discolora- tion is markedly pink, pointing to a more favourable condition of the potato. With a broM'n discoloration the growth is feeble and appears abortive ' (Blaxall). As showing the extra- ordinary vitahty possessed by the microsporon on all the media, it is important to note ^, , , that even when quite dried un the growth has beeu successfully sub-cnltm-ed, by the author ju i quoted, from tubes two years old. In broth, isolated mucus-like globules are seen, having a satiny lustre when seen by transmitted light. II. Trichophyta Cultures Sabouraud classifies the trichophyta met with in France according to theu^cultural pecuharities, on French proof agar, as follows •- 1. Trichophyta toith crateriform culUres, corresponding with 1. endothnx (three known species). 2. Trichovhyta with cmcminate cultures (having a central mound ' See footnote, p. 79. Fig. 52.—cRATERiroBM cultuhe of a tri- chophyton ENDOTHRIX,' ON FRENCH PROOF AGAR.