SfiCT.XXXV. i. i. ASSOCIATION. 343 



SECT. XXXV. 



DISEASES OF ASSOCIATION. 



L i. Sympathy or confent of parts. Primary and fecondary parts 

 of an officiated train of motions reciprocally affect each other. 

 Parts of irritative trains of motion affect each other in four ways. 

 Sympathies of thejkin and flomach. Flujhing of the face after a 

 meal. Eruption of the fmall-pox on the face. Chilnefs after a 

 meal. 2. Vertigo from intoxication. 3. Abforption from the 

 lungs and pericardium by emetics. In vomiting the ablions of the 

 Jlomach are decreafed^ not increafed. Digejlionflrengthened after 

 an emetic. Vomiting from deficiency of fenforial power. 4. 

 Dyfpnaafrom cold bathing. S/oiv pulfe from digitalis. Death 

 from gout in the flomach II. I. Primary and fecondary parts 

 of fenfitive affbciations affecl each other. Pain from gail-Jlone^ 

 from urinary Jlone. Hemicrania. Painful epilepfy 2. Gout 

 and red face from inflamed liver Shingles from inflamed kidney. 

 3. Cor yza from cold applied to the feet. Hepatitis. 4. Pain of 

 Jhoulders from inflamed liver. III. Difeafesfrom the affilia- 

 tions of ideas. 



I. i. MANY fynchronous and fucceflive motions of our muf- 

 cular fibres, and of our organs of fenfe, or ideas, become affoci- 

 ated fo as to form indiffolubie tribes or trains of aUon, as fliewn 

 in Section X. on Aflbciate Motions. Some conftiturions more 

 eafily eftablifh thefe aflbciations, whether by voluntary, fenfi- 

 tive, or irritative repetitions, and fome more eafily lofe them 

 again, as (hewn in Section XXXI. on Temperaments. 



When the beginning of fuch a train of adtions becomes by 

 any means difordered, the fucceeding part is liable to become 

 difturbed in confequence, and this is commonly termed fympa- 

 thy or confent of parts by the writers of medicine. For the 

 more clear underftanding of the fympathies we mud confider 

 a tribe or train of ations as divided into two parts, and call one 

 of them the primary or original motions, and the other the 

 fecondary or fympathetic ones. 



The primary and fecondary parts of a train of irritative actions 

 may reciprocally affect each other in four different manners. 



1. They may both be exerted with greater energy than natural. 



2. The former may act with greater, and the latter with lefs 

 energy. 3. The former may act with lefs, and the latter with 

 greater energy 4. They may both act with lefs energy than 

 natural, I ftiajl now give an example of each kind of thefe 



modes 



