480 UTERUS, BY DR. R. CHROBAK. 



The substance of these glands can only be isolated with great 

 difficulty in the healthy uterus. It is more easy to effect this 

 during menstruation and pregnancy, though, on account of 

 their numerous curvatures, it is very rarely that they can be 

 seen throughout their whole length. They are composed of 

 an extraordinarily thin structureless membrane, in the sub- 

 stance of which, especially in the menstruating uterus, elon- 

 gated oval nuclei are found, which are easily distinguishable 

 from the muscle-nuclei that remain attached to the walls of 

 the gland tubes when they are isolated. 



In regard to the epithelium of the glands, I shall here, in 

 consequence of its importance, quote entire the account given 

 by Gustav Lott.* 



As early as 1852, Leydigf made a communication in reference to an 

 observation by Dr. Nylander, to the effect that the epithelium of the 

 uterine glands of the Pig was a ciliated epithelium. 



Leydig, however, although at the end of this communication he 

 stated as his opinion that similar epithelium might be found in other 

 Mammals and in Man, has not since published any observations bearing 

 on this point. 



KollikerJ simply corroborated Nylander's discovery. Leydig him- 

 self, in his Manual of Histology, published five years after the above- 

 mentioned communication, again only mentions the Pig; and Freyjl 

 only does the same in his still more recent work. So far as the literature 

 of the subject was accessible to Lott, no mention of this discovery is 

 elsewhere made. Becker, II who investigated the generative organs of 



* See A. Rollett, Untersuchungen, Band ii. Leipzig, 1870. 



t Ueber Flimmerbewegung in den Uterindrusen des Schweins, (On the 

 ciliary movement in the uterine glands of the Pig,) in Mtiller's Archiv 

 fur Anat. und Physiologic, 1852, p. 375. 



I Handbuch der mik. Anat. 1852, Band ii., pp. 445, 446. 



Lehrbuch der Histologie, 1857, p. 518. 



|| H. Frey, Handbuch der Histologie und Histochemie des Menschen, 

 3rd edit. 1870, p. 539. 



IF Ueber Flimmerepithelium und Flimmerbewegung im Geschlechtsappa- 

 rate der Sciugethiere und des Menschen, (On ciliary epithelium and ciliary 

 movement in the sexual apparatus of Mammals and of Man,) in Mole- 

 schott's Untersuchungen zur Naturlehre des Menschen und der Thiere, 

 Band ii., p. 71. 



