The question of the value of electricity in the treatment of insanity is one concerning which much difference of opinion appears to prevail, although there seems to be a more or less general idea that it is, or ought to be, of some service. We every now and then read of cases which have progressed to recovery under the application of this agent, but, as far as one can judge from published records, very little has hitherto been done in this country to study the question at all thoroughly or systematically.