CONTENTS. VU 



CHAPTER VII. 



THE MECHANICAL AND IMMECHANICAL PARTS AND FUNCTIONS OF 

 ANIMALS AND VEGETABLES. 



Imperfection of knowledge no proof of want of contrivance, 84 ; 



on chemistry, 89; secretion, 91. 

 J^ole 22, on the perfection of the immechanical parts of animals, 

 84 ; 23, on the gastric juice as not acting upon the stomach 

 of the hving animal, 91. 



CHAPTER VIIL 



MECHANICAL ARRANGEMEMT IN THE HUMAN FRAME. 



Of bones, 99; neck, ib. ; fore-arm, 102; spine, 104; chest, 114; 

 knee-pan, 115 ; shoulder-blade, 116 ; joints, 118 ; ball and 

 socket, 119; gynglymus, 121; knee, ib.; ankle, 122; 

 shoulder, 123; passage of blood-vessels, 124; gristle, 125; 

 moveable cartilages, 127; synovia, 128; how well the 

 joints wear, 129; immoveable joints, 130. 



J^oie 24, on the meaning of the terms tenon and mortice, 100; 

 26, on variations of structure to suit the peculiar condition 

 or necessities of different animals, 112; 27, referring to 

 Appendix for further proofs of adaptation of structure to 

 habits and condition of animals, 115; 28, on the shoulder- 

 blade and collar-bone, 117; 29, on the absence, in the ouran- 

 outang, of the ligament in the head of the thigh-bone ; 121 ; 

 30, on the ankle-joint, 122 ; 31, on the cartilage which 

 covers the ends of the bones, 126 ; 32, on the manner in 

 which the thigh-bone rests upon the shin-bone, and the use 

 of the cartilage between them, 128 ; 33, on absorption, in 

 a case of inflammation of a joint, 130. 



CHAPTER IX. 



OF THE MUSCLES. 



Suitableness to the joints, 132; antagonist muscles, 134; not ol>- 

 structing one another, 136 ; action wanted where their 



