144 APPENDIX. 



Origin. Found in the scaly crusts. 



Form. Similar to oidiuiu lactis.. 



Growth. Is very sparse. On gelatine round white masses 

 inclosed by a zone of liquefied gelatine. 



In milk it is destroyed. 



Pathoyenesis. Causes favus in man. 



Tricophyton Tonsurans. Found, in 1854, by Bazin, in Tinea. 



Form. Similar to the achorion or i'avus fungus. 



Growth. Somewhat more rapid than the favus, and the gela- 

 tine quickly liquefied. Old cultures are of an orange-yellow 

 color. Colonies have a star-shaped form. 



Patlwyenesis. Herpes tonsurans and the various tinea3 are 

 produced by this fungus. 



Microsporon Furfur. Found in tinea versicolor, almost iden- 

 tical with the above, forms dry yellow spots, usually on the chest 

 in persons suffering from wasting diseases. 



Aspergillus Glaucus, 



Origin. In saccharine fruits. 



Form. The hyphen has formed upon its further end a bulb, 

 from which pear-shaped sterygmata arise and bear upon their 

 ends the conidia or spores. 



Growth. Best upon fruit juices. Non-pathoyeni\ The mould 

 is green. AsperyUhtifiavua has the tufts and spores of a yellow 

 color. 



A. Fumigatus. Is pathogenic for rabbits when injected into 

 them. At the autopsy their viscera are found filled with the 

 mould. 



Examination of Yeasts and Moulds. Yeasts and moulds are 

 best examined in the unstained condition. A small portion of 

 the colony rubbed up with a mixture of alcohol and a few drops 

 of liquor ammonia ; of this, a little is brought upon the glass- 

 slide covered with a drop of glycerine and the cover-glass pressed 

 upon it. If the preparation is to be saved, the cover-glass is 

 secured by sealing-wax around the edges. Yeasts take methy- 

 line-blue stain very well. 



Ray Fungus. A division containing the actinomyces. (Bol- 

 lenger and Israel.) 



Oriyin. In actinomycosis of man and cattle, in the growth. 



