Pure and Mixed Linseed- Cakes. 
47 
fungi. By instituting a more rigid search, the objects shown in 
Fig. 38 were discovered. They appear to consist of long tubes 
terminating in a congeries of minute globular bodies. These 
are the mycelium or roots of fungi belonging to the Mucor or 
common mould class. 
Microscopic Examination of the surface of an entire Oat. 
For this purpose it was found desirable to employ reflected 
light, and to use an object-glass having a half-inch focal power, 
A, Fig. 38, represents the surface of an oat upon which is 
Fig. 38. — Mycelium of Fungus (Aspergillum) groiving on mouldy Oalg. 
standing, and apparently out of which is growing, a fullj'- 
developed fungus of the most beautiful description. The head 
of this little fungus evidently resembles that of the common 
mushroom in its general appearance. It. belongs to a species of 
Aspergillum. In the other parts of the same drawing we may 
easily detect some of the spores depicted in Fig, 37, the 
mycelium, or roots, shown in Fig. 38, and a number of the 
