100 PROCEEDINGS Of THE ANATOMICAL AND ANTHROPOLOGICAL 



Date of observation, November, 1905. 

 Sex, Male. 



Accessory or detached slip of trapezius muscle (both sides). 



This slip lay along the anterior border of the trapezius, and was 

 distinctly separated from it by a narrow cellular interval, which was 

 least marked below. The slip was about f inch broad, and was en- 

 closed in the common sheath of fascia of the trapezius. The origin 

 of the trapezius, from the superior curved line of the occipital bone, 

 was only inch wide. Beyond this, externally, at an interval of 

 inch, was the tendinous origin of the slip, which was ^ inch wide. 

 The insertion of the slip was by tendinous fibres into the posterior 

 border of the clavicle just internal to the insertion of the rest of the 

 muscle the whole occupying not more than the outer third of the 

 posterior border. 



About 3 inches from the origin of the slip, the small occipital 

 nerve hooked round between the slip and the rest of the trapezius. 



Both sides were exactly alike, except that on the left side, the 

 tendinous origin was adherent to the underlying splenius capitis 

 muscle. 



(Signature of observer) JAMES WATT, M.A. 



Date of observation, November, 1905. 

 Sex, Male. 



High division of the brachial artery (left). 



In this subject the brachial artery divides into radial and ulnar 

 arteries at the lower border of the teres major muscle. These arteries 

 pass down the arm together, and, accompanied by the median nerve, 

 pass under the bicipital fascia, and are distributed normally. 



(Signature of observer) H. BRAYSHAW. 



