. New elements of operative surgery . s passing upwards to the thyroid giana,and anastomosing with the superior thyroidal artery, was one greatsource of blood; its branches were large and tortuous, forming com-munications in every direction, with those from above. The thyroidea ascendens is naturally a small and unimportantbranch; it was here three times its usual size, mounting np theneck in a zig-zag direction, lying close to the vertebrae, forming fre-auent comnmnications with the vertebral artery, dividing into manysmall branches at the upper part of the mastoid muscles, forming abeautiful
. New elements of operative surgery . s passing upwards to the thyroid giana,and anastomosing with the superior thyroidal artery, was one greatsource of blood; its branches were large and tortuous, forming com-munications in every direction, with those from above. The thyroidea ascendens is naturally a small and unimportantbranch; it was here three times its usual size, mounting np theneck in a zig-zag direction, lying close to the vertebrae, forming fre-auent comnmnications with the vertebral artery, dividing into manysmall branches at the upper part of the mastoid muscles, forming abeautiful plexus of vessels, with the mastoid branch of the occipital DR. MOTT ON ANEURISMS. 335 artery, and sending branches to all the muscles on the upper part ofthe neck. The cervicalis profunda and superficialis were much enlarged,sending frequent branches upwards to anastomose with the de-scending branches of the occipital artery. By far the most impor-tant and interesting part of the circulation yet remains to be de-scribed. (Plate 2.). til Vfrepresented the right carotid artery, obliterated from the innominata toine puurcation. The success with which the circulation was carried on to the head throughpi**d**°^ channels, may also be seen in the enlarged anastomosing Right bronchial tube. Fig. 6. Thyroidea ascendens. ~ Aorta. 7. Scalenus anticus muscle. A ^^^^ Innominata. 8. Subclavian artery, after it has passed 4. Ramusthyroideusarterimthyroideae. ^ the scaleni muscles. 5. Sterno-cleido mustoideus. 9. Transversalis humeri of its natural sizeia Transversalis colli. b Cprvicalis superficialis et profunda. C Portion of the carotid separated by the ligatures. d Obliterated carotid. e Superior thyroidal artery. / Inferior portion of the labial, as divided in the Mental artery. h Superior portion of the labial, where tied in the operation. • Plexus of arteries formed by inosculations of the ascending thyroid, and a descending branch of the o( cipital. k De
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