OF THE MUSCLES. 



MYOLOGIA. 



" The application of muscles in an animal body is either to produce a 

 quantity of motion equal to the quantity of contraction of the muscle; or, by 

 the application of levers, to give a greater motion than could be produced by 

 the single contraction of the muscle. This, in general, is not the case in ma- 

 chines composed by art; for in art the principal reason for the introduction of 

 mechanics is to acquire power in the effect, which obliges us to increase the 

 velocity in the moving cause, as in levers and pulleys." 



HUXTER. Croonian Lectures, No. IIL 



