XIII.] MOULDS. 427 



B. EUROTIUM ASPERGILLUS-GLAUCUS. 



1. Place some apricot jam under a bell-jar and keep 

 moist and warm. In a few days the Eurotium will 

 probably make its appearance. A crop of conidia 

 will first be produced. Neglect these, and look out, 

 after some weeks, for the sexual fruits, as described 

 in the text. 



2. Mount some of the mycelium and fruits in water, 

 and observe first with a low and then with a high 

 power. Examine 



a. The mature fruits. These are approximately 

 spherical in form. Observe the outside of the 

 fruit formed of dense cellular tissue. Burst some 

 of the fruits by pressure on the coverslip. Observe 

 the asci in the interior, each containing eight asco- 

 spores. 



/;. The development of the fruit. Make out the 

 spirally coiled branch forming the ascogonium, 

 and the pollinodium in contact with it. Observe 

 the outgrowth of hyphse from below the asco- 

 gonium, to form the envelope of the fruit. 



C. MucoR Stolonifer. 



1. Place some bread under a bell-jar and keep very 

 moist and warm; in from 24 to 48 hours its surface 

 will nearly always be covered by a crop of erect 

 aerial mucor-hyphce, each ending in a minute en- 

 largement {sporangium) just visible with the unas- 

 sisted eye. 



2. Snip off a i^\N of the hyphae with a pair of scissors, 

 mount in water, and examine with i inch obj. 



