RINGWORM. 



'03 



outside and inside. Many of them are of animal origin, especially 



from the horse and the cat. 



T. Tonsurans. Gives a crater-like culture with fine marginal 

 rays. Fungus wholly inside the hair. Causes most 

 of the large-spored scalp ringworms and many 

 body cases. 



FIG. 41. More common fungi, i, culture of Achorion schoenleini (favus); 

 2 culture of Trichophyton tonsurans; 3, culture of Trichophyton sabouraudi; 

 4, sporangium of Aspergillus; 5, culture of Trichophyton mentagrophytes; 

 6, culture of Microsporum audouini; 7, mycelium and spores of Malassezia fur- 

 fur; 8, Cryptococcus gilchristi; 9, A and B, sporangium and mycelium of Mucor 

 corymbifer; 10, Penicilium; n, Saccharomycestumefaciens; 12, Discomyces bovis. 



T. Sabouraudi. Has a heaped-up festooned sort of culture. 

 There is a similar fungus with a violet culture. 

 These cause some of the scalp and beard ring- 

 worms. 



T. Mentagrophytes. This is the megalosporon endo- 



