ANGULAR CRANK. 



The roads may be in a smoother, harder, and 

 cleaner condition than usual. The wind may 

 be more helpful, and the fact not duly noted. 

 The rider himself may be in more vigorous 

 health. 



More important, probably, than any or all 

 of these causes is the mental state of the rider, 

 and its influence on his bodily vigour. 



He has become interested in the new inven- 

 tion. He hopes it may be a success. Perhaps 

 he has already pronounced in its favour on 

 theoretical grounds, is confident that it will 

 prove a great benefit, and anxious to justify 

 his opinion in a practical trial. Inspired by 

 this confidence and determination, he actually 

 is able to make more resolute and sustained 

 efforts than ever before, and rides up a hill 

 that has been previously insurmountable. 



The remarkable influence of the mind upon 

 the body is well known, and this is simply 

 another instance of it. The rider does not 

 understand that the cause of his extra strength 

 is psychological rather than mechanical, and 

 the inventor gets the benefit of the confusion. 

 Let us not grudge it to him. The benefits that 

 an inventor does get are few enough, as a rule. 



2. The Self -moving Mill. 



The last section has shown an example of 

 the attempts of inventors to increase a man's 



