282 PATHOLOGY OF NUTRITION. 



boiled. The change may occur in any organ in the body, but 

 is most frequent in the liver, kidney, heart-muscle, and mucous 

 membrane of the gastro-intestinal tract. It occurs in all 

 inflammations, in acute infectious diseases, fever, after burns; 

 and in poisoning from phosphorus, arsenic, and mineral acids. 

 The cells either soon recover or the process quickly passes on 

 to fatty degeneration. 



Calcareous infiltration, or calcification, is the impregnation of 

 tissues with the salts of lime in the form of the insoluble 

 carbonate and phosphate. All parts are alike susceptible, 

 both the cells and intercellular substance, though the latter to 



FIG. 116. 



Melanotic alveolar sarcoma of the skin, a, mononuclear ; a', polynuclear sarcoma- 

 cells with epithelial character ; b, pigment-cells ; c, stroma with bloodvessels 

 and pigment. X 300 (Ziegler). 



the greater degree. The reason of this deposit is not clear, 

 but it is always connected with a lowered state of nutrition. 

 The tissue appears dusted with little fine granules, which in 

 the earliest stage might be mistaken for fat ; but they dissolve 

 on the addition of hydrochloric acid and with effervescence 

 if the carbonate is present (Fig. 115). 



