The neuroses of the genito-urinary system in the male : with sterility and impotence / by R. Ultzmann ; tr. by Gardner W. Allen.

  • Robert Ultzmann
Date:
1890
Catalogue details

Licence: Public Domain Mark

Credit: The neuroses of the genito-urinary system in the male : with sterility and impotence / by R. Ultzmann ; tr. by Gardner W. Allen. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    of semen arises from these crystals. They surely do not belong to the orchitio secretion, for they are found in the most beautiful forms, and in the greatest number, in the semen of azoosper- mia. Since, moreover, in the secretion of ] tatorrhoea the concentric prostatic concretions are common, while the spermatic crystals are only rarely found, and the latter are almost con- stant in the azoöspermous semen, so is the asser- tion not to be disregarded, that these crystals belong also, at least in part, to the secretion of the vesiculae seminales. The spermatic crystals are colorless, and be- long to the rhomboid system of crystals. Under the microscope are found rhomboid tablets and rhomboid prisms. Sometimes two or more rhomboid prisms combine to form an oblique cross, or a rosette. When the crystallization is incomplete these crystals take the form of a boat or of a whetstone, of which the tapering angles are bent in an opposite direction (Fig. 6, page 85). The spermatic crystals are not a product of decomposition of the semen, as was formerly supposed, for they are found in azoöspermous semen a few hours after ejaculation, and in normal semen immediately after drying on the glass slide. That the crystals in normal semen only appear late, often not until the second or third day, is explained by the abundance of liv-