EXPLANATION OF PLATE CCCCXVIII. Fig. 1. Exhibits a view of the exit from the head, and B. The submaxillary gland. g. The accessory nerve of Willis. n, n. The par vagum running down to the diaphragm, C, D, E. The digastric muscle, partly covered by forms various ganglia, and gives branches to most of the the submaxillary gland. F. Part of the thyroid gland. G, G. The esophagus or gullet. H, H. The windpipe or trachea. II. III. IV. V. VI. VII. The bodies of the six lower I, K, L. The heart, with part of the pericardium at- P, p. The arch of the aorta, drawn aside. 9. The common trunk of the right subclavian () P. The vena cava from the superior parts; Q. That from below. R, S, T. The right lobe of the lungs. U, V. Part of the left lobe. W, X, Z. Muscular parts of the diaphragm. a. The first cervical or great ganglion, from which d. The lower cervical ganglion, opposite the fifth e. The upper thoracic ganglion, opposite the first f. The third dorsal ganglion, between the second and o, o. The phrenic nerves distributed to the dia- Fig. 2. A section of the cuticle of the lilium chalce- Fig. 5. Represents the atlantal extremity of the slow a. The subclavian artery, lying upon the subscapu- b. The division of the artery into equal-sized cylin c. The ulnar artery proceeding to divide in the usual |