620 APPENDIX. 
TRICHOPHYTON (Ringworm Fungus). 
Ringworm of the body or hairless parts of the skin, 
tinea circinata, and ringworm of the hairy parts, tinea 
tonsurans and tinea barbe or tinea sycosis are due to 
the fungus trichophyton, discovered by Gruby in the 
human hair, and between the epidermal cells by Hebra, 
and obtained in free cultures by gravity. 
Fig. 83. 
Hair riddled with ringworm fuugus. Megalosporon variety. 
According to Sabouraud, whose conclusions are based 
on an extensive series of microscopical examinations of 
cases of tinea in man and animals, of cultivation in 
artificial media, and of inoculation on man and animals, 
there are two distinct types of the fungus trichophyton 
causing ringworm in man—one with small spores (2 to 
3 mm.), which he calls ‘‘T. microsporon,’’ and one 
with large spores (7 to 8 mm.), which he calls “T. 
megalosporon.’’ They differ in their mode of growth 
on artificial media and in their pathological effects on 
