the flow of either is liable to be arrested in a moment of sudden mental action." Parkhurst says: "The prostatic fluid, according to Robin, is secreted at the moment of ejaculation. The remaining element of the spermatic secretion is produced, under normal circumstances, only as required, either for impregnation or for the maintenance of the affectional function. The theory that the sperm is naturally secreted only as it is required, brings it into harmony with other secretions. The tears, the saliva, and the perspiration, are always required in small quantities, and the secretion is continuous; but if required in great quantities, the secretion becomes great almost instantly. The mother's milk is chiefly secreted just as it is required for the infant, and when not required the secretion entirely ceases; yet it recommences the moment the birth of another child makes it necessary. * * * A man accustomed to abstinence will not suffer from any accumulation of secretions, while a man whose absorbing glands have never had occasion to take up the secretions will be in trouble; just as a dairy cow which has not been milked will be in trouble, though if running wild she would never have any necessity for milking. * * * The objection that man needs physical relief from a continuous secretion is answered by the admitted fact that men not deficient in sexual vigor live for months, and probably for years, in strict abstinence, and with no physical inconvenience such as is often complained of by men who happen to be deprived of their accustomed indulgence for a week or two at a time." Dr. Nystrom, the eminent Swedish writer on the subject, however, utters the following warning to those who would make hasty generalizations on the subject: "In speaking of relative abstinence or regulation and command of the sexual instinct, I warn against absolutism in this regard, and especially against the generalizing of abstinence as possible for everybody. Although abstinence during an entire lifetime does not injure certain individuals, it cannot be endured by others for some length of time without undesirable consequences. I therefore oppose the principle of absolute continence as in the main false. It may possibly be applied to a few deeply religious or philosophical persons, but not to the majority of normal people, despite good resolutions and habits. * * * We must consider the different bodily constitutions and passions--why some people without difficulty, others with the greatest difficulty, can master their feelings regarding sexual relations. * * * May those who try to better humanity in sexual respects first give their attention to the subject when well prepared with a rich experience and deep study, for otherwise they cannot give advice which can be followed, and their work should fail as being contrary to human nature."