Though the title on the outside of this book is the "Refraction of the Eye," it is a very different kind of work from that of Thorington, published under the same title. It might more properly pass under its subtitle, as a treatise on ophthalmometry, as that is practically what it is. This is not intended as criticism, or as implying anything against the value of the work. The author states that it is intended more especially for beginners, by which he evidently means those who are beginning the study or practice of the specialty of ophthalmology, but he hopes its clinical details will interest others and that it will especially be read by oculists who, though having the ophthalmometer, do not use it. It will therefore have a large clientele of readers, and since, indeed, it is about the only treatise in English on ophthalmometry, it ought to be