74 CHANGES IN THE CIRCULATION OF THE BLOOD. 



with genuine suppuration. In this "purulent" or "septic " softening of 

 the thrombus the risk is great of a distribution of the infectious material 



FIG. 10. LAMELLATED THROMBUS. 



This is an occluding thrombus. At the right and also above are masses of red blood cells, while the re- 

 mainder is largely fibrin in layers, indicating successive deposits. 



through the circulation. Finally, the thrombus may be replaced, by a new 

 formation of vascular connective tissue, itself disappearing by autolysis 



FIG. 11.- ORGANIZED THROMBUS. 



This shows the vascular connective tissue which has replaced the clot, with five new channels through 

 which the, circulation is re-established. 



