24 C. IV. M. Poynter 



ARTERIES OF THE THORAX 



AORTA THORACALIS AND ITS BRANCHES 



In addition to the variations previously reported, Hepburn 

 (1895) reports a right bronchial artery from the aortic arch, 

 Walsham (1880) one from the subclavian, and Bean (1853) a 

 supernumerary vessel. 



The intercostal arteries may arise from a single common stem 

 for the two sides or may be double in each interspace, Hellima 

 (1861), Walsham (1881), Ernst (1900), Biihler (1904). 



ARTERIA PULMONALIS 



These anomalies seem to be generally connected with develop- 

 mental disturbances of the lungs and consist of an accessory artery 

 from the aorta. McCotter explains the condition as the persistence 

 of an early capillary plexus. References by Huber (1777), Mau- 

 gars (1802), Rektorzik (1861), Cleland (1869), Allen (1881), 

 Nicolle (1887), Laval (1901), Meloy (1908), Simpson (1908), 

 McCotter (1910), Doereng (1914). 



ARTERIES OF THE ABDOMEN 



AORTA ABDOMINALIS AND ITS BRANCHES 



A. Phrenic a Inferior 



These arteries present a variety of variations. In my series they 

 arose by a common trunk in 55 per cent., in conjunction with the 

 coeliac axis in 18 per cent., and in 5 per cent, they were associated 

 with the suprarenal or renal vessels. References : Walther (1729), 

 Haller (1747), Murray (1798), Sabatier (1791), Lauth (1833), 

 Quain (1844), Dubrueil (1847), Cavasse (1856), Luschka (1862), 

 Horrocks (1884), Rossi (1904), Branco (1912). 



Aa. Lumbales 



These arteries are recognized as dorsal segmental vessels and 

 show anomalies depending on such origin. A vessel may be lack- 

 ing and the area will be supplied by adjacent trunks or several 



