159 



one for even after the most violent of these reagents some absorption 

 of granules occurred. 



Examination of such a diaphragm shows the granules distributed 

 over the surface in such a way as to outline each epithelial cell al- 

 most as distinctly as silver nitrate does this. They evidently find their 

 way between the epithelial cells at any point along their margins. 

 This is confirmed by sections which show the epithelial cells retracted 

 from one another and little masses of granules lying in the space be- 

 tween them. Passing into the crevices of the lattice -work beneath 

 these cells the granules reach the endothelium over the surface, of 

 which they spread out finally penetrating, as in the case of the epi- 

 thelium between the individual cells _ and thus gaining entrance into 

 the lumen of the lymphatics from which point they may be passed 

 along into the larger trunks. 



In the embryo it is found that in the process of growth of the 

 lymphatics into the diaphragm from the descending thoracic duct there 

 is a period in which the diaphragm is fully completed and separates 

 the peritoneal from the pleural cavities before the lymphatics enter 

 its substance. The intimate relations between these structures must 

 therefore arise secondarily and the peritoneum can by no means be 

 considered as a mere dilatation of the lymphatic system. 



While these results explain the ready entrance of granules into 

 the lymphatics from the peritoneum and thus recognize with v. Reck- 

 linghausen the functional capabilities of the lymphatics, they bring 

 out with especial clearness the fact that in spite of the loose con- 

 nection of the lining cells the lymphatics are here as in most other 

 places anatomically closed canals with lining endothelium which retains 

 throughout its specific nature and does not merge over into the con- 

 nective tissue cells nor into the epithelial cells which line the peritoneum. 



Anatomische Gesellschaft. 



In die Gesellschaft sind eingetreten Dr. Greil, Prosektor am k. k. 

 anatomischen Institute, Innsbruck; Dr. Alfred Dönitz, Assistent an 

 der Chirurg. Universitätsklinik in Bonn ; Dr. H. Bluntschli, Assistent 

 am anatomischen Institut Heidelberg; J. Jolly, Maitre de conference 

 au laboratoire d'Histologie du College de France, Paris; Dr. P. A. 

 Zachariades, Rep6titeur an demselben Laboratorium. 



Für die 17. Versammlung in Heidelberg haben angekündigt: 



20) Herr Legros : Sur les branchies externes des TeTßosteens, et la 

 disposition primitive de Fappareil branchial des Vert6bres. 



21) Herr M. Nussbaum: Die Kernformen der Spermatogenese bei den 

 Batrachiern. Mit Demonstrationen. 



22) Herr Greil : Ueber die Bildung der Scheidewand im Truneus arteriosus. 



