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1. Science of reproduction and reproductive control: the necessity of some abstaining from having children, the duty of all to limit their families according to their circumstances demonstrated : effects of continence, effects of self-pollution, abusive practices : seminal secretion, its connection with life : how to preserve youthful vigor, and how to attain to the acme of physical, moral, and intellectual perfection : laws and philosophy of impregnation, with an explanation of the seminal animalculae and female system, with all the different modes of preventing conception and the philosophy of each : closing remarks by the author