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. 
N. 
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Fic. 189. — Unicellular Mycelium of a Mould (Mucor Mucedo), sprung from a 
Single Spore. 
a, b, andc, 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 hyphe from the spores begins. 
Sketch. 
