Class IV. i. 2. OF ASSOCIATION. 373 



ORDO I. 



Increafed AJfociate Motions. 



GENUS II. 



Catenated with Senfiiive Motions. 



The primary links of the affociated actions of this genus are 

 either produced or attended by painful or pleafurable fenfation. 

 The fecondary links of the firft ten fpecies are attended with 

 increafed motions without inflammation, thofe of the remainder 

 are attended with inflammation. All inflammations, which do 

 not arife in the part which was previoufly torpid, belong to this 

 genus ; as the gout, rheumatifm, eryfipelas. It is probable many 

 other inflammations may, by future obfervation, require to be 

 tranfplanted into this clafs. 



The circles of fenfitive aflbciate motions confift chiefly of the 

 excretory duets of the capillaries and of the mouths of the ab- 

 sorbent vefiels, which conftitute the membranes ; and which 

 have been induced into action at the fame time ; or they confift 

 of the terminations of canals ; or of parts which are endued 

 with greater fenfibility than thofe which form the firft link of 

 the aflbciation. An inftance of the firft of thofe is the fympa- 

 thy between the membranes of the alveolar proceffes of the jaws, 

 and the membranes above or beneath the mufcles about the 

 temples in hemicrania. An inftance of the fecond is in the 

 fympathy between the excretory duel: of the lachrymal gland, and 

 the nafal duct of the lachrymal fac. And an inftance of the 

 third is the fympathy between the membranes of the liver, and 

 the £kin of the face in the gutta rofea of inebriates. 



SPECIES. 



1 . Lachrymarum jluxus fwpatheticus. A flow of tears from 

 grief or joy. When the termination of the duel of the lachry- 

 mal fac in the noftrils becomes affected either by painful or 

 pleafurable fenfations, in confequence of external ftimulus, or 

 by its aflbciation with agreeable or difagreeable ideas, the mo- 

 tions of the lachrymal giand are at the fame time exerted with 

 greater energy, and a profufion of tears fucceeds by fenfitive ai- 

 fociation, as explained in Seel. XVI. 8. 2. 



In this cafe there exifts a chain of affociated actions, the fe- 

 cretion of the lachrymal gland is increafed by whatever ftimu- 



lates 



