As to the possible interpretation of such a case, see Case No. 433 (man who could see large letters sometimes). _Re_ blindness, H. Campbell states that the number of cases of hysterical blindness appears to be decreasing as the war continues. The blindness he finds to be rarely an absolute one. As a rule, the vision is merely blurred or there is a contraction of the visual fields. The condition is much less frequent than that of deafmutism. _Re_ hysterical blindness, Dieufaloy is cited by Crouzon as describing a triad of conditions characteristic of hysterical blindness, namely, (_a_) sudden onset, (_b_) preservation of pupillary reflexes, and (_c_) normal fundus. Shell-shock amblyopia (composite data). =Case 270.= (PARSONS, May, 1915.) Parsons describes a typical case of shell explosion amblyopia. After more or less prolonged fatigue from marching and trench exposure, the soldier is knocked down or blown into the air, and more or less severely injured or wounded by concussion, fracture, bullets, or shell splinters, losing consciousness, but perhaps not enough to prevent automatic walking in a dazed state to the dressing station. Memory of this phase is lost. The man is instantaneously stricken blind, possibly also deaf; and possibly smell and taste are also lost. Blepharospasm is intense; there is lacrimation; the lids are opened with such difficulty that examination of the eyes is almost impossible (nor, according to Parsons, have the pupils yet been examined at this stage). In a week or two the blepharospasm diminishes, and the fundi, which are found to be absolutely normal, can be examined. The eyes may be found to be quite normal, the pupils reactive to light though perhaps sluggishly and perhaps unequally. Sight is now somewhat restored, light can be perceived, and large objects distinguished. The patient can grope about and usually does not stumble against obstacles. The fields of vision are markedly contracted, and more so than the avoidance of obstacles in walking would suggest. Vision is eventually recovered completely. The right eye (the shooting eye) is often more deeply affected and recovers more slowly. Perhaps a central scotoma may persist. Sometimes on manipulation of lenses the full vision can be produced for the types. Parsons seeks to explain the psychology of traumatic amblyopia in the light of deductions of Lloyd Morgan, Mark Baldwin and McDougall. Shell-shock amblyopia (excitement, blinding flashes, fear, disgust, fatigue). =Case 271.= (PEMBERTON, May, 1915.)