SOME TYPES OF PLOWEELBSS PLANTS. 



231 



285. Examination with the Mdgnifying Glass. — Study some of the 

 larger and more mature patches and some of the smaller ones. Note : 



(a) The lender, thread-like network with which the surface of the 

 bread is covered.- The threads are known as hyphoe, the entire network 

 is called the mycelium. 



(6) The delicate threads which rise at intervals from the mycelium 

 and are terminated by small globular objects. These little spheres are 

 spore-cases. Compare some of the spore-cases with each other and 

 notice what change of color marks their coming to maturity. 



Fig. 199. — Unicellular Mycelium of a Mould (Mucor Mucedo), sprung 

 from a Single Spore. 



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

 maturity. (Considerably magnified.) 



286. Examination with the Microscope. — Sketch a portion of the 

 untouched surface of the mould as seen (opaque) with a two-inch 

 objective, then compare with Fig. 199. 



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 



