CAPILLARY SYSTEMS. 143 



JL. Tendons, cartilages, hair, some ligaments. 



Q. How do you prove the existence of any capillaries 

 in these? 



./?. Injections and disease prove it; these tissues are 

 really vascular. 



Q. On what does the number of capillaries in a part_ 

 depend ? 



*fl. It depends on the functions they perform. Those 

 having few capillaries, such as cartilage, have only nutri- 

 tion to support; others have exhalation and absorption; 

 and others again have, superadded to all these, secretions 

 to form. 



Q. What is the pathological distinction between active 

 and passive increased secretion and exhalation? 



/!?. Preceding the active there is an increased afflux of 

 blood; in the passive this is not the case. 



Q. What do you mean by an active secretion or exha- 

 lation ? 



Jl. One attended with an increase of the vital forces; 

 in the passive forms there is a diminution of these forces. 



Q. Give a definition of the general capillary system? 



Jl. It is a general net-work, which communicates in 

 every organ, and from one organ to another; forming in 

 this way free communications for the fluids of the body 

 from head to foot. 



Q. How does this view affect the usually admitted at- 

 tributes of the cellular texture ? 



t/2. It has been thought that the permeability of the 

 body depended on the cellular texture, but here you see 

 it ascribed to the capillary system. 



Q. Do the capillary vessels conveying red and white 

 fluids freely communicate? 



