142 



MICRO-ORGANISMS AND DISEASE. [CHAP. 



tonsurans as Tricliophyton tonsurans, in Pityriasis versicolor as 

 Microsporon furfur. Grawitz has shown by artificial cultures 

 on gelatine, that the spherical or oval conidia germinate into 

 shorter or longer cylindrical filaments, which by subdivision 



3 



FIG. 102. FUNGI FROM A FAVUS-PATCH (NEUMANN). 



form septate mycelial hyphae. These and their branches give 

 origin in their turn to spherical or oval spores or conidia. 

 They, as well as the hyphse, differ in size in the various 

 species. 



Malcolm Morris and G. C. Henderson, 1 on the other hand, 

 maintain, that by artificial cultivation of the spores of 

 Trichophyton in the substance of gelatine-peptone, at tem- 

 peratures varying from 15 to 25 C., these grow into branched 

 septate mycelial filaments, which by their mode of fructification 

 are seen to be identical with the mycelium of Penwillium. 

 Compare also with Babes. 2 



(&) Asperglllus. Some of the branches of the mycelium of 

 this fungus assume an upright position, are thicker and not at 



1 Journal of the Eoyal Microscopical Society, April 11, 1S83. 



2 Archives de Physiologic, 8, 1863, p. 466. 



