Abstract
In the study of spermatozoa with the darkfield microscope in April, 1920, my attention was attracted by the presence of very many minute particles which exhibited the Brownian movement. A number of specimens were examined, always with the same result, except that in perfectly fresh specimens of semen the Brownian movement was not distinctly apparent. In these specimens the particles seemed to be imbedded in a gelatinous matrix, so that the particles moved only when the matrix was moved by the penetrating or lashing movements of the spermatozoa. After some hours the gelatinous condition disappeared and liquefaction supervened. In this latter phase the Brownian movement of the particles became very active. If the cover glass be surrounded with a ring of oil to prevent drying, the particles and their movement may be observed for several days.Up to date, the particles have been found to be constantly present in the seminal secretion of man, stallion, bull, boar and the testicular fluid of the rooster.Counts w...
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