This book is offered as a sequel to the author's work on "Functional Nervous Diseases," the preface stating that "difficulties of adjustments of the eyes are a source of nervous trouble, and more frequently than other conditions constitute a neuropathic tendency." The subject is very fully covered, beginning with a short historical sketch dealing with the time when actual strabismus only was recognized, and including our present recognition of heterophoria. The comparative anatomy of the eye-muscles of fishes, birds, reptiles and mammals is considered in the chapter devoted to anatomy. This chapter is particularly exhaustive and is divided into ten sections, which deal with the movements and positions of the eyes, with comparative anatomy, with the orbital measurements, planes, axes, etc., with the eye-muscles themselves, and with the insertions of the tendons, etc., covering the anatomy of the orbital aponeuroses, capsule of Tenon, vessels and nerves. Under physiology is discussed