130 THE STORY OF THE LIVING MACHINE. 



or, it is better to say, it is a series of machines one 

 within the other. As a whole it is a machine, and 

 its parts are separate machines. Each part is 

 further made up of still smaller machines until we 

 reach the realm of the microscope. Here still we 

 find the same story. Even the parts formerly 

 called units, prove to be machines, and when we 

 recognize the complexity of these cells and their 

 marvellous activities, we are ready to believe that 

 we may find still further machines within. And 

 thus vital activity is reduced to a complex of ma- 

 chines, all acting in harmony with each other to 

 produce together the one result life. 



