On the Regeneration of Pre‐Ganglionic and of Post‐Ganglionic Visceral Nerve Fibres

ABOUT two years ago, II gave an account of an experiment upon the regeneration of the cervical sympathetic. In this experiment the nerve was cut. between the inferior and the superior cervical ganglion, and a year later, the upper thoracic spinal nerves were stimulated in the vertebral canal. It was found that each of the upper seven thoracic nerves-i.e. each of those which send nerve fibres to the cervical sympathetic-produced with considerable exactness its normal and characteristic effect, and had again become connected with the nerve cells of the superior cervical ganglion. The result was sufficiently curious to make further experiinents desirable.