XX PROCEEDINGS OF THE 



(6) Dr T. W. p. Lawren'ce showed a specimen from the Museum 

 Collection of University College, of High Division of the Bracliial 

 Artery^ with Reunion of Branches. The specimen consists of the 

 greater part of the brachial artery, including its bifurcation, together 

 with the median basilic and basilic veins. The brachial artery divides 

 at a point about 15 cm. above its lower end into two trunks of unequal 

 size. The two trunks remain separate to within a short distance of 

 their lower ends, where they become united laterally for a length of 

 G mm., and are then continued into the two vessels of the forearm. 



Between the median basilic vein and the larger of the two divisions, 

 an arterio venous aneurism has formed as a result of a wound of the 

 artery in the operation of venesection. Ligatures have been applied 

 to both divisions of the artery. 



The specimen, which is one of Sir Charles Bell's preparations, is 

 preserved in the Museum of University College, London, together 

 with several paintings by Sir Charles Bell of the arm from which the 

 specimen was taken. 



Reunion of the two branches in high division of the brachial artery 

 was first described by Jones Quain in the first edition of the Elements 

 of Anatomy, p. 405. In the specimen which he describes, the two 

 trunks converged at the bend of the elbow, "so as to form a short 

 trunk, which soon divided again into the radial and ulnar arteries in 

 the usual way." Actual reunion of the branches such as Quain here 

 describes is a much rarer condition than that in which the communi- 

 cation is by means of a distinct intervening trunk. The specimen 

 exhibited presents a condition intermediate between these two ; no 

 distinct intervening vessel is present, but the two trunks, lying in 

 contact, communicate by an aperture in their contiguous walls. 



Professor Thane very kindly furnished the following references to 

 fourteen previous cases of actual reunion of the two divisions : — 



Bankart, Pye Smith, and Phillips, Giafs Hospital Reports, vol. xiv., 



1879, p. 447. 

 Dean (M. H.), cited by R. Winslow, Broolxlyn Annals, vol. vii., 



1883, p. 20. 

 Green (P. H.) — Varieties in the Arterial System, 1830, p. 17 (three 



cases). 

 Macartney. — Specimen in the Macartney Collection at Cambridge, 



referred to by R. Quain, Anatomy of the Arteries, 1828, p. 221, 



and by F. Tiedemann, Explicationes Siij)plementorum ad I'ahidas 



Arteriarum, 1846, p. 50. 

 Mauclaire {V.)—BnlL Soc. Anat., Paris, 1894, p. 105. 

 Norton, cited by J. 11. Power, Anatomy of Arteries, 1860, p. 358. 

 Quain (.lones), Elements of Anatomy, 1828, p. 405. 

 Quain (R.), Anatomy of the Arteries, p. 264. 

 Shepherd (F. J.), Broolclyn Annals, 1883, vol. viii. p. 175. 

 Tiedemann (F.), ExpUcatio Sufiplementoram ad Tahidas Arteri- 



artwi, 1846, pp. 50, 52 (three cases). 



