REPARATOUV INFLAMMATION IN AKTERIES, 11 



des Yereins russiclier Aerzte, 1867) attempted to test the 

 various theories concerning the organizing power of the white 

 blood-cells. His observations were made on a clot of blood 

 and a large number of white blood-corpuscles, which were 

 taken from one frog and placed under the skin of another. 

 He found by this experiment that the wiiole mass — the red 

 and the white blood-corpuscles, as well as the fibrin — under- 

 went degeneration by fatty metamorphosis. The red blood 

 disks first decolorized, and then degenerated. On the fourth 

 day, there remained of the clot only pigment and fatty par- 

 ticles. 



Bubnoff (Ueber die Organisation des Thrombus. Central 

 Blatt, No. 48, 1867), under the direction of Yon Recklinghausen, 

 performed three series of experiments, aiming at the tracing 

 of the movements of the white blood-corpuscles in the organi- 

 zation of venous thrombi. 



1st Series. Ligation of jugular vein. Rubbed vermilion on 

 exterior wall of the vessel. Result — the colorless corpuscles 

 penetrate the wall of the A'essel, absorb the vermilion, reach the 

 thrombus, and then organize themselves, the color not disap- 

 pearing. 



2d Series. Ligature of one jugulai*. .Twelve hours afterward 

 injection of vermilion into the other jugular. Result — vermil- 

 ion did not reach the thrombus. 



3d Series. Two ligatures on one vein. An injection of ver- 

 milion into the thrombus. Result — the white corpuscles did not 

 absorb the vermilion. 



Conclusions: 1st. The thrombus organizes only by means 

 of tlie white blood-corpuscles, which penetrate the vessel-wall, 

 d. The white blood-corpuscles do not reach the thrombus 

 directl}' by way of the blood-current. 



3d. The cells of the vessel-wall arc probably concerned in 

 the organization. 



Waldeyer (Zur iDathologischeu Anatomic der Hautkrank- 



