258 



FOUNDATIONS OF BOTANY 



Wet a bit of the mould, first with alcohol, then with water. 

 Examine in water with the half-inch objective, and sketch a little of 

 the mycelium, some of the spore-cases, and the thread-like stalks on 

 which they are borne. Are these stalks and the mycelium filaments 

 solid or tubular ? Are they one-celled or several-celled ? 



Mount some of the mature spore-cases in water, examine them 

 with the highest obtainable power, and sketch the escaping spores. 



FIG. 189. Unicellular Mycelium of a Mould (Mucor Mucedo), sprung from a 

 Single Spore. 



a, 6, and c, branches for the production of spore-cases, showing various stages of 

 maturity. (Considerably magnified.) 



Sow some of these spores on the surface of " hay-tea," made by 

 boiling a handful of hay in just water enough to cover it and then 

 straining through cloth or filtering through a paper filter. After 

 from three to six hours examine a drop from the surface of the 

 liquid with a medium power of the microscope (half-inch objective) 

 to see how the development of hyphse from the spores begins. 

 Sketch. 



