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 



