NATURAL THEOLOGY. 



139 



a perfect resemblance to our works of art. An 

 artist does not alter the native quality of his 

 materials, or their laws of action. He takes these 

 as he finds them. His skill and ingenuity are em- 

 ployed in turning them, such as they are, to his 

 account, by giving to the parts of his machine a 

 form and relation in which these unalterable pro- 

 perties may operate to the production of the 

 effects intended.^^ 



^ In the figure of a muscle, given in page 85, it may be observ- 

 ed that the tendons are on different sides of the muscle. 

 A 



If we were to plan their arrangement it would be thus : A is the 

 tendinous origin, and B the tendinous insertion ; and the muscu- 

 lar fibres run obliquely between them. Tliis obliquity of the 



