Dr. Lucius Nicholls. 223) 
give rise.to a million and more in ten and 
a half hours. . In double this: time there will 
be produced over a million millions. of cells. 
From this it is easy to appreciate the great 
and rapid changes which take place in ferment- 
ing matter, for each cell has the. power of 
secreting a minute amount. of a substance 
Dr. Lucius NICHOLLS IN GYMKHANA COSTUME. 
known as a ferment, and it is this which brings 
about the changes; thus the ferment pro- 
duced by yeast, called zymase, has the power 
of transforming sugar into alcohol with the 
liberation of carbonic acid gas and energy— 
the latter appearing partly as heat, It is this 
energy which is required by the yeast plant to 
