to have a part in the work. Yet it is considered that by all their united efforts they do not accomplish one-half of it; and it remains for future anatomists and physiologists to investigate the subject more deeply, and to endeavour to throw additional light upon the obscurity in which it is at present involved. Of late it is considered that electrical agency has much to do in the matter. How far the laws by which the great Creator governs this universe, and keeps all its parts in harmonious action with each other, may ultimately be discovered, we cannot say. In this, as well as in a thousand other things which are in daily operation, and on every side surround us, our ignorance is made manifest. Whether the extent of human knowledge will ever enable us to penetrate fully into these mysteries of creative wisdom, is a problem yet to be solved. At present we can add but little to the exclamation of the Psalmist,—We are fearfully and wonderfully made! |