46 THE BIOLOGY OF THK CELL 



Make drawings to illustrate as many as possible of 

 the facts you have learned concerning the reproductive 

 stage of green slime. 



GeTieral Questions. — In what ways may green slime 

 be dispersed? Is green slime dependent upon "food 

 solutions" for its nourishment? If not, how can it, 

 having no roots, get food ? Which do you regard as 

 the higher plant, green slime or yeast ? Why ? 



B. MULTICBLLULAE PlANTS 



The following examples are cells from these plants, 

 isolated from the body : 



Example 3. — Spores of Fnn^;! {PenidlUum, Eurotium, Aga- 

 ricus, etc.) 



Material. — If no bread, cake, jam, or leather bearing 

 mould can be obtained, a slice of bread or cake or a 

 few dried prunes may be put on a saucer under a beU- 

 jar or tumbler with a few scraps of moist blotting-paper, 

 and set away in a warm place. Moulds wiU usually ap- 

 pear in the course of a few days. Specimens may also 

 be obtained frequently from the top of canned fruit and 

 preserves. In case mouldy substances fail, the top of a 

 ripe mushroom or toadstool which may be had at green- 

 houses at almost any season will do as well. Iodine, 

 acetic acid carmine, magenta, Pasteur's solution with 

 sugar, compound microscope, bell -jar, and the moist 

 chamber will be used in the examination of the ma- 

 terial. 



Method of Examination. — Hold a piece of the mouldy 



