143 



ones, as a rule, in not having special nerves of supply, but in obtaining- 

 their nerve plexuses direct from the sympathetic plexus on the parent 

 artery. 



From the anatomical facts herein stated, it follows that local 

 damage to a large artery will injure the vascular plexus at the 

 point of damage only, but will not account for changes produced 

 in the vessel at a distance from the injured site. If absolute proof 

 can be obtained of the relation between damage to the sympathetic 

 supply of an artery and morphological changes in the vessel itself 

 of more than focal character, then the nerve damage must occur at 

 some distance from the arterial tree, and not simply to the sympathetic 

 plexus as it lies on the vessel. 



Although this work was done nearly twelve months ago, I have 

 delayed its publication in the hope of getting time to work also on 

 the blood vessels of the pelvis. As, however, the latter project is 

 still unattempted, I have decided, on the recommendation of Professor 

 WiNGATE Todd, to communicate my results so far as they go. 



References. 



(1) Kramee, J. G., The Distribution of Nerves to the Arteries of the 

 Arm. Anat. Record, 1914. May. 



(2) Hamann, C. A., The Peripheral Nervous System, in Human Anatomy, 

 edited by Gr. A. Piersol, 3rd ed.. Vol. II. 



(3) SouLiE, A., Angeiologie in Traite d'Anatomie humaine, by Poieier 

 and Charpy. T. Ill, fasc. 3, 2nd ed., 1904. 



(4) Paterson, a. M., The Peripheral Nervous System, in Cunningham's 

 Textbook of Anatomy, 4th ed., 1913. 



(5) Hardesty, I., The Nervous System, in Morris' Textbook of Anatomy, 

 4th ed., 1907. 



