THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL, 



VOL. XIX. JANUARY. 1898. 



NO. 1. 



Moulds in Medicinal Solutions. 



Sterigmatooystis ochraceus. — This form of mould 

 (figures a, b, c, d, e, f, g) differs from Aspergillus slight- 

 ly. In the latter, the spores are borne on simple flask- 

 shaped bodies, the sterigmata (fig. h) while in the former 

 these sterigmata are compound and branched (d, e). This 

 mould was found in a fruiting condition, but upon artifi- 



cial cultivation it developed large, ocher-colored heads of 

 spores. These heads were 80 to 200 microns in diameter, 

 and irregular ; the spores were small, spherical, 3 microns 

 in diameter and minutely roughened. This form fluidi- 

 ties gelatin and changes the color of the medium, but 

 what eff*ect it has upon sugars or the active plant constit- 

 uents is unknown. 



In the out, a and b are spore heads showing irregular 



