SECT. xxxv. i. DISEASES OF ASSOCIATION. 505 



gering inebriate cannot completely balance himfelf 

 by fuch indiftinft vifion. 



3. An inftance of the third circumftance, where 

 the primary part of a train of irritative motions ads 

 with lefs, and the fecondary part with greater ener- 

 gy, may be obferved by making the following ex- 

 periment. If a perfon lies with his arms and fhoul- 

 ders out of bed, till they become cold, a temporary 

 coryza or catarrh is produced ; fo that the paflage 

 of the noftrils becomes totally obftruded ; at lead 

 this happens to many people ; and then on covering 

 the arms and fhoulders, till they become warm, 

 the paflage of the noftrils ceafes again to be ob- 

 ftru&ed, and a quantity of mucus is difcharged from 

 them. In this cafe the quiefcence of the veflels of 

 the (kin of the arms and moulders, occafioned by 

 expofute to cold air, produces by irritative aflbci- 

 ation an increafed action of the veflels of the mem- 

 brane of the noftrils ; and the accumulation of fen- 

 foriai power during the torpor of the arms and 

 (houlders is thus expended in producing a temporary 

 coryza or catarrh. 



Another inftance may be adduced from the fym- 

 pathy or confent of the motions of the ftomach 

 with other more diftant links of the very extenlive 

 tribes or trains of irritative motions affociated with 

 them, defcribcd in Seel. XX. on Vertigo. When 

 the actions of the fibres of the ftomach are dimi- 

 nifhed or inverted, the adions of the abforbent 

 veflels, which take up the mucus from the lungs, 

 pericardium, and other cells of the body, become 

 increafed, and abfoib the fluids accumulated in them 

 with greater avidity, as appears from the exhibition 

 of foxglove, antimony, or other emetics in cafes of 

 anafarca, attended with unequal pulfe and difficult 

 ref pi ration. 



That the act of naufea and vomiting is a decreaf- 

 ed exertipn of the fibres of the ftomach may be thus 



deduced ; 



