zoor.' 



skeleton of tin- hand is subdivided into three se<rmellt>, the 

 carpu-. metacarpus, and lin^i-is: in the carpus tli- 

 ci^ht limit's; in the metacarpus live ; and in each linger there 

 an- three Urnes. with tin.- exception of the thumb, in which 

 only two an- reckoned. 



'I'lic hunirnis has a hall-and-sot-kt-t motion upon the 

 scapula, and is moved hy several ])owerful muscles, of which 

 some proceed from the scapula (suh-seapiilar, supra-spinal, 

 infra-spinal, teivtes); others from the trunk, as the pectoralis 



t \"crfcl'ral Culmim. lu'lis. 



\ ; 



-"'Clavicle. 



Third Rib. 



Muscles. 



Fig. S3. Thorai of Man.* 



major, latissimus dorsi. By its lower or distal extremity, 

 it articulates with the radius and ulna. 



275. The radius and ulna form the skeleton of the 

 fore-arm. Of these, the radius is the more moveable, and 

 upon its rotation on the extremity of the humerus depends 

 the movement of rotation and supination of the hand. There 

 is no rotation at the elbow-joint, both bones moving on the 

 * See explanation of this figure at page 73. 



