1 6 C. W. M. Poynter 



from the subclavian or the carotid it occupied the same position on 

 the axis that the thyroid usually does ; it was occasionally double 

 and never sprung from the subclavian independently. 



A. Cervicalis Supcrficialis 

 It is somewhat more difficult to classify than the preceding. 

 Bean found a branch of the transverse cervical in 60 per cent., 

 while Pellegrini reported it a branch of the thyrocervical trunk in 

 78 per cent. I have found it most frequently a branch of the 

 thyrocervical trunk, y6 per cent., though not infrec^uently as a 

 common trunk of a few millimeters length with the transverse 

 cervical. In all cases but one when the latter arose from the third 

 portion of the subclavian the superficial cervical arose from the 

 thyrocervical trunk. It was absent in 3.5 per cent. 



A. Transversa Scapulce 

 Although the transverse scapular may arise from the third por- 

 tion of the subclavian, 6 per cent., or from the axillary .5 per cent., 

 Pellegrini 9 per cent., authorities agree in associating it with the 

 thyrocervical trunk, 70 per cent., Pellegrini 61 per cent., Bean 70 

 per cent. It may be absent 4 per cent., or more frequently be 

 small and only represented in its sternal and acromial branches. 



A. Transversa Colli 

 Pellegrini found it arising from the axillary in 5 per cent, and 

 in 39 per cent, as a separate branch of the subclavian. Pearsol 

 considered it normally as an independent branch from the third 

 portion of the subclavian, as did Henle, Gegenbauer, and Sappey; 

 Testut called it the posterior scapular. I found it in common with 

 some other cervical branch in half the series. The posterior scapu- 

 lar was quite constant, 93 per cent., but while it was most fre- 

 quently associated with the transverse colli, 80 per cent., it was 

 found with the transverse scapular, profunda cervicalis, and as a 

 separate trunk, Pye-Smith (1871), Cones (1880), Collins (1886). 



A. Intercostalis Suprema 



This vessel was constant in my series, Sebastian (1847), Pensa 

 (1905), Luna (1908). It may spring from a common trunk with 



