A microscopical inquiry into the vegetable parasites infesting the human skin / by Jabez Hogg.

  • Jabez Hogg
Date:
[1859]
Catalogue details

Licence: Public Domain Mark

Credit: A microscopical inquiry into the vegetable parasites infesting the human skin / by Jabez Hogg. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Case 9.—Ringworm. Hairs contorted or split up into fine tow-like masses, over the surfaces of which spores were freely distributed; epithelial scales detached and filled with granular matter. In nine cases of Porrigo scutulata the hair was examined; fungoid vegetations or vestiges of them, sometimes with spo- rulcs, sometimes without, were observable in each of these cases; but in three of them they were imperfectly seen. It may here be observed that the filaments of the Micro- sporon tonsurans, said to be the cause of this disease, are de- scribed as found in the substance of the roots of the hair, and spreading longitudinally upwards; whereas, the Microsporon Audouini, the supposed source of the Porrigo decalvans, forms a tube round each hair outside the follicles, not in the substance of the hair. I have not been able to verify these distinctions; on the contrary, on comparing many specimens of these diseases with each other, I have always found filaments springing up from the bulb, and then growing up around or along the hair, sometimes longitudinally in bifurcating branches nearly straight, sometimes in tortuous or spiral forms, with or without spores, as the drawings here exhibited will shosv. In both diseases the bulbs of the hairs and the hair itself were variously decayed and deformed. Pityriasis versicolor. Cloasma, furfuraceous Desquamation. Case 1.—Mr. N—. Patches about the trunk of a yel- lowish-brown appearance, consisting of a delicate desquama- tion of the epidermis. Mycelia with filaments and sporules growing and detached. Epithelial scales large. Case 2.—Microsporon furfur. As represented in drawing, mycilia, filaments with spores in groups and clustered (fig. 5). Case 3.—Epithelial scales and filaments. Case 4.—Microsporon furfur. Case 5. ] -p. lg severally showing the Microsporon CraseQ- \ furfur. Case 7. J . Case 8.—Fungoid vegetation. Epithelium deficient ot nucleus and pale in colour. Case 9— Filaments branching above the masses of scaly epithelium. Case 10.—Fungi in filaments and a few spores. Case 11.—Microsporon furfur. Mycelia with filaments