82 



ELEMENTS OF HISTOLOGY. 



[Chap. X. 



107. If capillaries are abnormally distended, as 

 in inflammation, or otherwise injured, the cement sub- 

 stance between the endothelial plates is liable to give 

 way in the shape of minute holes, or stigmata, which 

 may become larger holes, or stomata. The passage 

 of red blood corpuscles (diapedesis), and the migration 

 of white corpuscles in inflammation through the 

 unbroken capillaries and small veins, occur through 

 these stigmata and stomata. 



108. Yoiuig: and Growing Capillaries, both 

 of normal and pathological tissues, possess solid thread- 



Fig. 50. From a Preparation of Omentum of Babbit, after staining with. 

 Nitrate of Silver. 



, A minute vein ; a, solid protoplasmic prolongations of the wall of a capillary, 

 connected with connective tissue corpuscles ; c, a solid young sprout. (.Atlas.) 



like shorter or longer nucleated protoplasmic processes 

 (Fig. 50), into which the canal of the capillary is 

 gradually prolonged, so that the thread becomes con- 



