Hyphomycetæ, genera: Achorion, Tricophyton, Oidium.
Algæ, genera: Sarcina, Leptothrix.
Schizomycetæ, or Bacteria, genera: Micrococcus, Rod-bacterium, Bacillus, Spirillum.22
21 For further details concerning these the reader is referred to the works of Magnin, Belfield, and Gradle on The Bacteria, and on the Germ Theory of Disease.
22 Cohn also separates vibrio and spirochæte as genera distinct from spirillum. They may, however, be regarded rather as species of that genus. Some recent authors included bacterium and bacillus under one genus, bacillus; against which simplification there seems to be no valid objection.
| FIG. 1. |
| Micrococci: a, zoogloea form; b, micrococcus from urine, in rosary chain; c, rosary chain from spoiled solution of sugar of milk (Cohn). |
Micrococci (Sphærobacteria of Cohn) are asserted (under certain conditions) by Letzerich, Wood, and Formad23 to be causative of diphtheria; Ogston has found them in ordinary pus; Rindfleisch, Recklinghausen, Waldeyer, Birch-Hirschfeld, and others report them to be always present in the abscesses of pyæmia; Buhl, Waldeyer, and Wagner state their occurrence in intestinal mycosis; Eberth, Köster, Maier, Burkhardt, and Osler, in ulcerative endocarditis; Orth, Lukomsky, Fehleisen, and Loeffler, in erysipelas; Coats and Stephen in pyelo-nephritis; Friedländer, in pneumonia; Eklund (Plax scindens) in scarlet fever; Keating24 and Le Bel, in measles; Leyden and Gaudier, in cerebro-spinal meningitis; Carmona del Valle, in yellow fever; Prior, in dysentery; Gaffky, Leistikow, Bokai, and Bockhardt, in gonorrhoea;25 besides other similar observations by numerous writers.
23 Bulletin of National Board of Health, Supplement No. 17, Jan. 21, 1882.
24 The Medical News, Philadelphia, July 29, 1882.