An interesting article in the American Journal of the Medical Sciences, already noticed in the Journal (p. 780) reviews in a very thorough manner the subject of nerve transplantation, an operation often experimentally performed, but one that, as Dr. Peterson shows, has had as yet but a limited utilization in the human subject. While other methods, such as the Letievant flap or the insertion of catgut, may suffice in most cases where direct approximation is impracticable, there will be cases where, with proper facilities, nerve transplantation will be an advisable operation, and the microscopic examination of Huber tends to show that actual nerve tissue furnishes a better route for the downgrowth of new axis-cylinders than any other foreign material. Nerve-flaps involve mutilation of healthy nerve and might, in case of very extensive removal of nerve-fiber, require dissection that would possibly have some inconvenience or danger. It is true that in