ADIPOSE TISSUE. 129 



occupied by globules of fat as large as those wbicli 

 are enclosed in the fat vesicle. The process can 

 hardly be regarded as morbid, unless the foi-mation 

 of adipose tissue itself is looked upon as pathological. 

 In this as in many other cases, it is impossible to 

 draw a line between physiological and pathological 

 chano-es. 



a 



182. In disease the bioplasm of cartilage, being 

 supplied with an undue proportion of pabulum, in- 

 creases. The formed material becomes softened owing 

 to the altered characters and increased proportion of 

 fluid which traverses it. The bioplasm may even 

 appropriate the formed material itself, as we found 

 happened in the case of the formed material of 

 mildew, epithelium, and other kinds of this substance. 

 The increased access of pabulum continuing, the 

 masses of bioplasm may at last multiply to such an 

 extent as to form a very soft pulpy texture quite 

 unlike cartilage, or they may divide and subdivide 

 with still greater rapidity, so as to produce pus. 

 These changes are not explained by what is called 

 ^^ irritation,'' nor are the cells ''stimulated'' to take 

 up more nutrient matter within a given period of 

 time than in the normal state, but the alteration 

 depends simply upon the restrictions to the access of 

 the pabulum to the bioplasm having been to some 

 extent removed. 



Adipose Tissue. 



It will be convenient in this place to refer briefly to 

 the structure and mode of formation of a tissue which 

 differs much from any of those already considered. 

 Adipose tissue is made up of capillaries and cells or 

 vesicles containing fatty matter and the bioplasm by 

 which both the walls of the vesicle and the fat itself 

 were formed. This adipose tissue is generally foimd 

 associated with the areolar or connective tissue ; but, 

 constituting the medulla of bones, as will be described 



K 



