In this connection I may refer to an interesting and suggestive paper by Harry Campbell on "The Craving for Stimulants" (Lancet, October 21, 1899). No reference is made to coitus, but the author discusses stimulants as normal and beneficial products of the organism, and deals with the nature of the "physiological intoxication" they produce.
Spermin was first discovered in the sperm by Schreiner in 1878; it has also been found in the thyroid, ovaries and various other glands. "The spermin secreting and elaborating organs," Howard Kelly remarks (British Medical Journal, January 29, 1898), "may be called the apothecaries' of the body, secreting many important medicaments, much more active and more accurately representing its true wants than artificially administered drugs."
See, e.g., a summary of Buschan's comprehensive discussion of the subject of organotherapy (Eulenburg's Real-Encyclopædie der Gesammten Heilkunde) in Journal of Mental Science, April, 1899, p. 355.
"Observations Upon the Acquirement of Secondary Sexual Characters, Indicating the Formation of an Internal Secretion by the Testicles," Proceedings Royal Society, vol. lxxiii, p. 49.