Introduction to the Study of Disease 



to perhaps loo per minute, and their volume 

 small ; this diminution in each pulsation being due 

 to the rapidity of the heart's contraction, and the 

 diminished recoil in the wall of the vessel. 



The Temperature 



Internal temperature, though subject to varia- 

 bility through external influences, of the different 

 animals is as follows : — 



Normal 

 Horse . . ioo° F. to ioT 



Ox 



Sheep 



Pig 



Dog, or cat 



Fowl 



ioi° F. ,, 102° 

 io2° F. ,, 104 

 102 F. „ 1031° 

 ioi° F. „ 102 

 104 F. 



Turkey and pigeon 109 F. 



The foregoing are the normal temperatures 

 when the animal is at rest. Exercise causes a 

 marked increase of temperature. 



The instrument employed for taking the internal 

 temperature is known as a clinical thermometer, 

 and those in use in Great Britian are marked on 

 the Fahrenheit scale, and obtainable from any 

 optician or chemist for about 2s. 6d., and every 

 stock-owner should have one of these in his 

 possession. A clinical thermometer consists of two 

 portions, viz, a bulb and a stem ; the first-named 



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