Many women who have lived protected lives have declared themselves unable to understand why a young woman should need reasons for pre-marital continence; and these women are probably right so far as the great majority of the daughters of families in good social conditions are concerned. As pointed out in earlier lectures, there is abundant evidence that the average adolescent girl who is protected against external sexual stimuli and influenced constantly by the prevailing ideals which demand chastity of women, is not likely to need any arguments why she should avoid pre-marital incontinence. Moreover, there seems to be little danger that the average girl with good social environment will ever question her ideals of chastity unless under the stress of overwhelming affection; in other words, there is little possibility that such women will be interested in the strictly mechanical, non-affectionate, and unsentimental sexual relations which must inevitably characterize the common prostitution of men. [Sidenote: Unprotected girls.] Note that I am referring to the average young woman in good social environment, and for the moment omitting the vast class of so-called "unprotected" girls. Moreover, I am speaking of the "average," and I am not forgetting that medical journals and books record many exceptions. Nevertheless, we must not be misled by medical literature, for naturally the physician sees the women whose lack of health leads them to seek professional advice, and it is well known that in sexual lines women commonly become decidedly unhealthy before they consult physicians. As testimony concerning the average normal women, I have the greatest confidence in the statements of thoughtful women with sound scientific attitude; and such are my authority for the view that maintaining pre-marital continence is not one of the serious problems for the average young woman with good domestic and social environment. Now, while I admit in advance that the problem of pre-marital continence is not of great significance in the personal lives of the great majority of the type of women who are likely to hear or read this lecture, I do believe that this is the type of women who ought to think over the problem as it concerns the atypical girl of good social groups and the "unprotected" girl of more unfortunate groups. I cannot see, therefore, why it is not best and safest that all girls should learn from parents or reliable books or teachers the main reasons for pre-marital chastity. [Sidenote: The girl who needs help.]