272 K R S E PORTRAITURE. 



matter how slowly we work a horse to start a flow of per- 

 spiration, you will perceive that the breathing will be very 

 much accelerated. 



PUPIL. There is another point I desire much to have 

 explained the effect of inducing copious perspiration in 

 the interval between the heats. 



PRECEPTOR. And a very important subject that is, as 

 numerous races are lost by a want of knowledge in this 

 particular. There are many things in relation to sweating 

 that I have not touched upon yet, intending to notice 

 them as they actually come in practice. We cannot give 

 the subject too much thought, however, as I have implicit 

 confidence in the benefits of forced perspiration, but which 

 may utterly frustrate the very best management, if not 

 rightly controlled. I have attempted to show that a fast 

 pace is accompanied by rapid action of the heart and 

 lungs. The heart has to beat quickly to furnish the mus- 

 cles with the blood required for them, in their rapid con- 

 tractions and expansions. The lungs must move quickly, 

 n order that the blood shall become properly aerated, 

 living off the carbon which is expelled in expiration, and 

 > mbibing the oxygen which inspiration furnishes. In this 

 :-apid transfer of the blood through the lungs to the ex- 

 tremities, and back to the heart, a great deal of heat is 

 evolved, which ought to be removed to the surface, where 

 it is dissipated in the atmosphere. This must be done by 

 the blood throwing off the watery portion through the 

 pores of the skin. The evaporation reduces the heat of 

 the body, and relieves the internal organs. The change in 

 the blood itself formerly spoken of which renders it 

 easier to be driven through the arterial system, also 

 greatly assists in relieving the labored action of the heart. 

 It is evident, then, that if a horse performs the labor that 

 ought to induce free perspiration, and he does not sweat, 

 there must be great internal suffering, and which cannot 



