40 ELEMENTARY BIOLOGY. [V. 



S. Treat another specimen with Schultze's solu- 

 tion; the wail is stained violet. 



b. The sporangia or asci. 



Examine with -} obj. 



a. Their size and form. 



i. Their structure. 



a. The homogeneous enveloping sac covered by 

 irregular masses of calcic oxalate. 



/3. The granular protoplasmic contents: un- 

 segmented in some; divided into a great 

 number of distinct oval masses {ascospores) in 

 others. 



7. The projection into the sporangial cavity of 

 the convex septum {columella) which separates 

 the hypha from the sporange. 



S. The collar projecting around the base of the 

 columella of burst sporangia. 



c. Stain some with iodine; others with Schultze'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. 



ry. Their structure. 



S. Stain with iodine and magenta. 



