MORBID ANATOMY 



329 



central axis, which takes the stain, and around this appears a 

 transparent or h3'aline sheath of varying size. 



preparations (Biondi-Ehrlich 



In certain of the teased 

 stain) the wall of the filament, 

 instead of being smooth and 

 homogeneous, appears rough- 

 ened, as if covered with very 

 minute but numerous spinous 

 processes. 



In the sections of the tis- 

 sue in which the fungus ap- 

 peared the substance of the 

 filament was not uniform. In 

 places it was drawn together 

 in an irregular manner, with 

 intervening clear spaces of 

 greater or less area. 



In some places the fila- 

 ments show distinct septa, but 

 the latter are not common. 

 Some of the club-like endings, 

 especially those that are elon- 

 gated, show a septum at the union with the filament proper. 

 Scattered among and coiled around the ordinary filaments 

 there have been observed much more slender ones apparently 

 devoid of any external sheath. 



There have also been observed numerous small circular 

 bodies of inconstant size. They have been seen lying freely 

 in the meshes of the mycelium and also closely applied to the 

 filaments. These bodies are not spherical, but thin and flat- 

 tened, and some of them present a curved appearance, convex 

 on the outer side and concave on the inner side. They sug- 

 gest the possibility of having been closely applied to the fila- 

 ments and have something of a scale-like arrangement. With 

 possibly one exception, no trace of blood vessels has been 

 found in the nodules. 



Fig. 64. The fungus. Toluidin 

 blue preparation (Fish). 



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