v.] MOULDS, 41 



y. Treat with iodine and magenta; the proto- 

 plasm is stained. 



8. Treat another specimen with Schulz's solu- 

 tion ; the wall is stained violet. 



b. The sporangia or asci. 



Examine with -| obj. 



a. Their size and form. 



b. Their structure. 



a. The homogeneous enveloping sac covered b}" 

 irregular masses of calcic oxalate. 



J3. The granular protoplasmic contents : un- 

 segmented in some ; divided into a great 

 number of distinct oval masses (ascospores) in 

 others. 



y. The projection into the sporangial cavity of 

 the convex septum (columella} which separates 

 the hypha from the sporange. 



8. The collar projecting around the base of the 

 columella of burst sporangia. 



c. Stain some with iodine ; others with Schulz's 

 solution. 



c. The ascospores. 



a. Crush some ripe asci by gentle pressure upon 

 the cover-glass. Examine with ~ obj. 



a. The size of the ascospores (measure). 



(3. Their form ; cylindrical and elongated, 



y. Their structure. 



8. Stain with iodine and magenta. 



