In our own climate women are more frequently affected with insanity than men. Several persons who superintend private mad-houses have assured me, that the number of females brought in annually considerably exceeds that of the males. From the year 1748, to 1794, comprizing a period of forty-six years, there have been admitted into Bethlem Hospital 4832 women, and 4042 men. The natural processes which women undergo, of menstruation, parturition, and of preparing nutriment for the infant, together with the diseases to which they are subject at these periods, and which are frequently remote causes of insanity, may, perhaps, serve to explain their greater disposition to this malady. As to the proportion in which they recover, compared with males, it may be stated, that of 4832 women affected, 1402 were discharged cured; and that of the 4042 men, 1155 recovered. It is proper here to mention that in general we know but little of what becomes of those who are discharged, a certain number of those cured occasionally relapse; and some of those who are discharged uncured afterwards recover: perhaps in the majority of instances, where they relapse, they are sent back to Bethlem. To give some idea of the number so readmitted, it may be mentioned, that, during the last two years, there have been admitted 389 patients, 53 of whom had at some former time been in the house. There are such a variety of circumstances, which, supposing they did relapse, might prevent them from returning, that it can only be stated, with confidence, that within twelve months (the time allowed as a trial of cure) so many have been discharged perfectly well. To shew how frequently insanity supervenes on parturition, it may be remarked, that, from the year 1784 to 1794 inclusive, 80 patients have been admitted, whose disorder shortly followed the puerperal state. Women affected from this cause recover in a larger proportion than patients of any other description of the same age. Of these 80, 50 have perfectly recovered. The first symptom of the approach of this disease, after delivery, is want of sleep; the milk is afterwards secreted in less quantity, and, when the mind becomes more violently disordered, it is totally suppressed. From whatever cause this disease may be produced in women, it is considered as very unfavourable to recovery, if they are worse at the period of menstruation, or have their catamenia in very small or immoderate quantities. At the first attack of the disease, and for some months afterwards, during its continuance, females most commonly labour under amenorrhoea. The natural and healthy return of this discharge generally precedes convalescence.