Of the nerves which associate the muscles of the chest, in the actions of breathing, speaking, and expression. Being a continuation of the Paper on the structure and functions of the nerves

This paper forms the continuation of that printed in the last volume of the Society’s Transactions, by the same author. In the present communication the author proceeds to show that the office of the respiratory apparatus is not confined to the changes produced upon the blood, but that the same actions are employed in subservience to other organs, and that they perform a variety of functions, as in the natural voice in articulate language, and in the expression of passion, as well as in the more familiar acts of smelling, coughing, sneezing, &c. Having established the proofs of the necessity of a number of remote parts being joined in the performance of these functions, he proceeds to show that there is a distinct class of nerves for this purpose. That these nerves depart from the same column of the spinal marrow, and diverge to all the parts of the frame, which are drawn into consent in the action of respiration.