The delver into the case histories of this volume will find numerous instructive combinations of hystero-reflex and organo-hysterical associations which are not to be enumerated in an introduction. The great importance of what all recognize as pathognomonic signs of organic disease--Babinski extensor toe response, persistent foot clonus, reactions of degeneration, marked atrophy, lost tendon jerks, etc.--is, of course, continuously in evidence. Extraordinary associations of hysterical, organic, and reflex disorders with other affections due to direct involvement of bone, muscle, and vessels and with the secondary effects of cicatrization and immobilization are brought out on many pages. In quitting this branch of our subject it might be remarked that considerable changes must be made in our textbook descriptions of nervous diseases in the light of the contributions to the neurology of the present war. One is reminded in the details of some of the cases of the discussions some decades since on the subject of spinal traumatisms; of the work of Erichsen which resulted in giving his name and that of “railway spine” to many of the cases now commonly spoken of as traumatic hysteria and traumatic neurasthenia; of the rejoinders of Page and his views regarding spinal traumatisms; and of Oppenheim’s development of the symptom complex of what he prefers to term the traumatic neurosis. One who has taken part in much court work cannot but read these case records with interest, for the neurology of the war as presented in this volume and in numerous monographs which are now appearing, throws much light upon many often mooted medicolegal problems. I recall how many able and honest neurological observers have changed their points of view since the early days of Erichsen’s “railway spine,” a pathological suggestion which is said to have cost the corporations of England an almost fabulous sum during a score of years. I recall also that a certain Court of Appeals in one of our states even felt itself called upon to promulgate an opinion intended to exorcise entirely the plea for damages for alleged injuries if it could be shown that these were due to fright. The data of this book do not put weapons entirely into the hands of the attorney and the expert for either the plaintiff or the defendant.