4JJO THE LAWS OF ORGANIC 



lation, as indicated by the pulse, and the generai 

 coldness and languor experienced during a par- 

 oxysm of nausea, are to be ascribed to those sym- 

 pathetic relations by which the brain, stomach, 

 and heart, are reciprocally influenced." * 



DXXVII. Although I cannot subscribe to the 

 above opinions, yet it is with diffidence I dissent 

 from such respectable authorities. The coldness 

 which accompanies the operation of emetics, 

 arises from the same proximate cause as that which 

 is the consequence of an exposure to a low state of 

 the atmosphere. The blood, in the latter instance, 

 leaves the extremities and the surface of the 

 body, because the cold constricts the capillary 

 vessels, on which account these contain less arid 

 the internal organs more blood. In the former, 

 the ordinary mode of circulation is disordered, 

 and this necessarily communicates its derange- 

 ment to the respiratory functions ; and as the 

 alternate action of these promotes the return of 

 the sanguineous fluid to the chest, or facilitates 

 its motion to the different parts of the system, it 

 is quite obvious, that whenever those means 

 which bring the blood to the chest preponderate 

 over those which should relieve it, an accumula- 

 tion will follow 5 and it is this accumulation which 

 satisfactorily accounts for \\\e frequency and small- 

 ness of the pulse, the sensation of ch illness, and I he 



* Paris' Pharmacologia, Vol. I. p- 154; 



