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1. Non-production.—Non-production of healthy ova and spermatozoa may be caused by (a) absence, non-development or malposition of the genital glands; (b) inflammatory troubles producing atrophy or destruction of those organs; (c) tumors or new growths affecting the nutrition of, or directly invading, the gland substance; and (d) all influences which affect the glands indirectly by altering the general condition of the body.
In all barren marriages where symptoms of uterine disease are not well pronounced, we should first make a microscopical examination of the spermatic fluid. This can be easily obtained by withdrawal of the organ as orgasm approaches, or by collecting the fluid, by means of a small syringe, from the vagina after the act has been completed. The best method, however, is the use of a condum during coitus.
Male.—The quantity of the seminal fluid depends on the size of the testes and the habits and physical condition
KAY TW. A STUDY OF STERILITY, ITS CAUSES AND TREATMENT.Being an Essay which received the First Prize of the Alumni Association of the College of Physicians and Surgeons, Baltimore.. JAMA. 1891;XVI(7):222-229. doi:10.1001/jama.1891.02410590006001b