Henderson has given us a valuable work. It is unique, as it teaches nothing but what the student and the general practitioner should know. No claim is made as to the correction to a fraction which can only be done by a trained specialist. The diseases described are such as do not require the use of the ophthalmoscope. Every teacher of ophthalmology will be pleased to place this work in the hands of his students. The illustrations are finely demonstrated and the work is presented in a very attractive form.