Being for many years an only child I saw little of other children, and formed the habit of amusing myself with making things--boats, houses, etc.--and acquired a taste for science. When I could read I preferred biography, history, and poetry to anything else. When I was 13 years old and at a large school I heard for the first time of coitus, but very imperfectly. For a few days it filled my thoughts and mind, but feeling it was too engrossing a subject and one which took me off better things, I put it out of my mind. Later, another boy gave me a fuller description of the matter, and I began to have a great desire to know more and to be old enough to practice it. I also discovered that boys masturbated, and about a year after tried the experiment for myself. This vice was largely indulged in by my school-fellows. It never occurred to me that it was sinful, until I was nearly 16, when I came across a passage in Kenns's _Manual of Schoolboys_, in which it was hinted such things were wrong morally and spiritually. Previously I had felt it was an indelicate and shameful thing, and bad for health. This last idea was held as a solemn fact by all my boy friends. Gradually religion began to exert an influence over my sexual nature, obtaining as years passed a greater and greater restraining power. It is simply impossible for me to write a history of my sexual development without also describing the action which Christianity has had in determining its growth. The two have been so intimately bound together that my life history would not be a faithful record of facts if I left religion out of it.