INFLAMMATION". 67 



application of cold in other cases, ice-bags, ice-water, to retard sup- 

 puration. Counter-irritation, in the shape of mustard, blisters, 

 liniments, etc. The use of disinfectants, both internally and ex- 

 ternalh^, should not be forgotten. Eegulate the diet and the hy- 

 gienic surroundings. 



What is meant by atrophy ? 



It is a diminution in the amount of a tissue, either in size or 

 number of its histological elements, accompanied by loss of weight 

 and impairment of function. Atrophy may be simple and numer- 

 ical; also general and partial. 



What is understood by degeneration ? 



It is an alteration in the quality of a tissue, with impairment 

 of function. Degeneration may be divided into two classes: //i- 

 fiUration and metamorphosis. 



Define each. 



Infiltration is where foreign matter from without is deposited 

 inside the cells, the cells not being destroyed nor their function 

 interfered with. 



Metamorphosis is where the cell is changed into some other 

 substance. There is destruction and softening of the cell. 



