Sect. XXXV. i. i. ASSOCIATION. 343 



SECT. XXXV. 



DISEASES OF ASSOCIATION. 



I. t . Sympathy of ccnfent of parts. Primary and fecondary parts 

 of an affociated train of motions reciprocally affecl each other. 

 Parts of irritative trains of motion affecl each other in four ways.- 

 Sympathies ofthejkinandflomach. Flufhing of the face after a 

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

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

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

 flomach are decreafedy not increafed. Digeflionflrengthened after 

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

 Dyfpncea from cold bathing. Slow pulfe from digitalis. Death 

 from gout i?i the flomach. II. 1. Primary and fecondary parts 

 of fenfitive offociations affecl each other. Pain from gall-floneg 

 from urinary flone. Hemicrania. Painful epilepfy. 2. Gout 

 and red face from inflamed liver. Shingles from inflamed kidney. 

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

 fijoulders from inflamed liver. III. Difeafes from the affecta- 

 tions of ideas. 



I. 1. Many fynchronous and fuGceffive motions of our muf- 

 cular fibres, and of our organs of fenky or ideas, become afibci- 

 ated fo as to form indiflbluble tribes or trains of action, as fhewn 

 in Section X. on AfTociate Motions. Some conftitutions more 

 eafily eftabiifh thefe aflbciations, whether by voluntary, fenfitive, 

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

 Us (hewn in Section XXXI. on Temperaments. 



When the beginning of fuch a train of actions becomes by 

 any means difordered, the fucceeding part is liable to become 

 disturbed in confequence, and this is commonly termed fympa- 

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

 more clear underftanding of thefe fympathies we muft confrder 

 a tribe or train of actions 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 (hall now give an example of each kind of thef* 



modes 



