176 



Necrosis. 



observation may establish the presence of fever, but observations 

 made at regular intervals afford more complete and certain informa- 

 tion as to the existence and characteristic features of the fever and 

 are necessary in following its course. The normal temperature 

 characteristic of the animal must be known, together with the 

 subnormal and hypernormal (non-febrile) ranges when in health; 

 the differences peculiar to species and age, and the daily physio- 

 logical fluctuations. These are dealt with in works on normal 

 physiology, to which reference may be made (Cf. Friedberger and 

 Frohner, Lchrb. dcr kliniscJicii UntcrsitchiDii^sinctliodcii f. Tier- 

 ijrcfc). 



The course of the fever can be luost satisfactorily followed bv 



Fig-. ]9. 



llemittent fever : an infectious fever in an eight-year-old mare. (After Fried- 

 berger — Frohner. ) 



recording the degrees of temperature obtained from time to time 

 by thermometric reading upon a chart marked out with abscissa 

 lines, each as a point [with corresponding height from the normal 

 line according to the number of degrees of temperature observed], 

 thereafter connecting these points so as to construct a scale or 

 curve of the temperature range upon the chart, the temperature- 

 or fever-curve. 



Necrosis. 



Complete death of organs or parts of organs within the living 

 body, local death, is known as necrosis (^ viKpwais. death) ; when 

 this process of disintegration has associated with it the features 



