18 
HISTOLOGY OF VEGETABLES. 
as has been already stated, they undergo much 
which have been specially named by botanists ; the 
oblong, lobed, square, prismatic, cylindrical, fusiform, 
muriform, sinuous, stellate, filamentous, &c. 
may be readily separated from each other, and obtained 
in an isolated condition ; many of them, in the lemon, 
and other parts of plants, the agency of maceration, or 
a , three ceils of Toruia the microscope, it is seen to 
cerevisice ; b, cells of Toruia 
diabetica; c, cells of Toruia ce- consist of myriads of minute 
revisits developing new cells. . . * 
simple ovoid cells, bhortly after, 
being placed in contact with a solution of sugar or in- 
fusion of malt, these cells develop smaller cells from one 
or two points of their external surface, Fig. 7, c, which, 
alteration in shape. The following are the chief forms 
In pulpy fruits, such as the ripe strawberry, the cells 
will be found to be upwards of half an inch in length ; 
in the shaddock they are much larger, hut in most fruits 
diabetica so constantly present 
during the fermentation of dia- 
Sk? betic urine, is the earliest con- 
dition of a fungus, very nearly 
allied to the common Mucor 
or mouldiness. When yeast is 
examined by a high power of 
