20 C. W. M. Poynter 



A. Profunda Brachii 



This artery arises from the axillary as a separate branch or in 

 conjunction with the circumflexse or the subscapularis in 19 per 

 cent. 



Pellegrini gives the number of axillary branches as 11. In addi- 

 tion to the branches above enumerated, I found a branch, which 

 may be designated as the capsular, which is present in 40 per cent. 

 The following references to axillary variations have been collected : 



Zagorsky (1809), Bintot (1827), Quain (1844), Tiedemann (1846), 

 Dubrueil (1847), Schwegel (1859), Hyrtl (1864), Bankart (1866), Carver 

 (1869), Pye-Smith (1871), Carver (1875), Nussbaum (1870), Walsham 

 (1880), Hepburn (1895), Ruge (1884), Schwalbe (1898), Hitzrot (1901). 

 Pitzorno (1903), Pensa (1905), Pellegrini (1906), Pohlman (1908), 

 Dallest (1907). 



A. Brachialis 



The anomalies of the brachial are all explainable on an embryo- 

 logical basis which has been so generally recognized that it need 

 not be repeated here. In classifying the cases collected the plan 

 employed by Miiller (1903) has been followed. 



Classification of Arm Artery Variations 



I. Brachial artery passes in front of the median nerve and continues as : 



A. Arteria brachialis superficialis superior. 



B. Arteria brachialis superficialis inferior. 

 II. Double brachial, i.e., superficial and deep: 



A. Brachialis superficialis superior. 



B. Brachialis superficialis inferior. 



1. Superficial and deep reunite. 



2. Superficial continues as the radial, 



a. without anastomosis, 



b. with anastomosis. 



3. Superficial brachial continues as 



a. Ulnar, 



b. Median, 



c. Ulnar and Median. 



4. Superficial brachial as the radial and suptrficial antibrachial. 



Group I, A. The brachial is double, consisting of deep and 

 superficial branches, and, as suggested by DeVriese (1902), the 

 auperficial branch, which develops early, is the homologue of the 



