Lastly, to illustrate the point discussed, to indicate how imperfect our present estimate of the prevalence of insanity most probably is, and to show the difficulties and defects of any ordinary census, we may appeal to the experience of the special commission charged by the legislature of Massachusetts to examine the statistics of Lunacy and the condition of Asylums in that State, as recorded in their report, published in 1855.

“In 1848” (they write, p. 18), “a committee of the Legislature, appointed to ‘consider the whole subject connected with insanity within the commonwealth,’ ascertained and reported the number of insane in this State to be 1512, of whom 291 were able to furnish the means of their own support, and 1156 were unable to do so, and the pecuniary condition of 65 was not ascertained.

“In making that survey in 1848, the Commissioners addressed their letters of inquiry ‘to the municipal authorities of every city and town in the commonwealth.’

“These public officers had direct means of knowing the number and condition of the pauper insane, and probably this part of the report was complete; but they had no other facilities of knowing the condition of those lunatics who were in private families, and supported by their own property or by their friends, than other men not in office, and could only speak of those who were within their circle of personal acquaintance. Consequently the report included only a part of the independent insane who were then actually in, or belonged to, the State.”

“In 1850 (p. 11), the marshals, the agents of the national government who were appointed to take the census, visited every family; and, among other items of information, they asked for the insane and idiots in the household.

“By this personal and official inquiry, made of some responsible member of every family, the marshals obtained the account of only 1680 insane persons and 791 idiots, which is but little more than two-thirds of the number ascertained by this Commission.

“Making all due allowance for the increase of population, and consequently of the insane and idiots, these figures undoubtedly show far less than the real amount of lunacy and idiotcy at that time, and render it extremely probable that many concealed the facts that the law required them to state to the marshals.”

Thus the marshals discovered the number of insane to be in 1850 nearly double that returned in 1848, and from their apparently searching inquiry, it might have been presumed that they had made a near approximation to the truth in the figures they published. However, the most pains-taking and varied investigations of the Special Commissioners in 1854, prove the marshals to have much underrated the number, for the result arrived at was, that in the autumn of the year just named, there were 3719 lunatics, of whom 1087 were idiots, in the State of Massachusetts.

The partial explanation of the divergence in numbers, viz.:—“that it is probable that many of the families refused or neglected to report to the marshals the insane and idiots who were in their households,”—is of itself an indication of one of the impediments to a correct enumeration of the insane members of a community, even when such is attempted under favourable circumstances. It is one likewise which, however operative in the United States, where the public asylums are open to, and resorted to by, all classes of the community, must be still more so in this country, where family pride endeavours in every way to ignore and keep secret the mental affliction of a member, as though it were a plague spot. Besides this, in no English census yet taken, has the enumeration of the insane constituted a special subject of inquiry.

This illustration from American experience, coupled with the considerations previously advanced, suffice to demonstrate that the published statistics of insanity in England and Wales are incomplete and erroneous, and that the machinery hitherto employed for collecting them has been imperfect. The corollary to this conclusion is, that the number of lunatics mentioned in the public official papers is much below the real one. However, the facts and figures in hand justify the attempt to fix a number which may be taken to represent approximatively the total insane population of this kingdom.