This treatise is essentially a contribution—and a most valuable one—to military ophthalmology, especially as regards the physical reconstruction of visual organs, damaged or destroyed by engines of war. The author confines his remarks to a consideration of the borgne, or "one-eyed" victim of battle. It is a matter of regret that we have no one word in English exactly corresponding to this term. As the advertisement points out, the experienced surgeon, during times of peace, was generally able to meet the requirements of most bulbar and orbital injuries and diseases calling for removal of the eyeball. He got along with some simple form of enucleation or its substitutes, modified to suit special cases, such as exenteration, amputation of the anterior segment of the eye, etc. Now and then, but still rarely, he was called on to do a plastic operation on the lids, to restore a lost conjunctival sac, or