CLASS IV. i . 2. 1 1 . OF ASSOCIATION. 3 7 7 



ogous in fome degree to the paralyfis of the mufcles of the arms 

 in colica faturnina. It would feem, that the mufcles of the legs 

 in walking get a fympathy with the lower parts of the inteftines* 

 and thofe of the arms in variety of employment obtain a fympa- 

 thy with the higher parts of them. See Cholera and Ileus. 



1 1 . Zona ignea nephritica. Nephritic {hingles. The exter- 

 nal fkin about the loins and fides of the belly I fuppofe to have 

 greater mobility in refped~l to fenfitive aflbciation, than the ex- 

 ternal membrane of the kidney; and that their motions are by 

 fome unknown means thus aflociated. When the torpor or be- 

 ginning inflammation of this membrane ccafes, the external fkin 

 becomes inflamed in its (lead, and a kind of herpes, called the 

 fhingles, covers the loins and fides of the belly. See Clafs II. 

 i. 5.9. 



12. Eruptio variolarum. After the inflammation of the in- 

 oculated arm has fpread for a quarter of a lunation, it affects the 

 ftomach by reverfe fympathy ; that is, the actions of the Horn- 

 ach are affociated with thofe of the (kin ; and as much fenfori- 

 al power is now exerted on the inflamed fkin, the other part of 

 this fenfitive afTociatkm is deprived of its natural fliare, and be- 

 comes torpid, or inverts its motions. After this torpor of the 

 ftomach has continued a time, and much fenforial power is thus 

 accumulated; other parts of the fkin, which are alfo affociated. 

 \vith it, as that of the face firft, are thrown into partial in- 

 flammation ; that is the eruptions of the fmall-pox appear on 

 the face. 



For that the variolus matter affecls the ftomach previous to 

 its eruption on the fkin, appears from the ficknefs at the com- 

 mencement of the fever ; and becaufe, when the morbid motions 

 affecl the fkin, thofe of the ftomach ceafe ; as in the gout and 

 eryfipelas, mentioned below. The confent between the ftom- 

 ach and the fkin appears in variety of other difeafes ; and as 

 they both confift of furfaces, which abforb and fecrete a quanti- 

 ty of moifture, their motions muft frequently be produced to- 

 gether, or in fucceflion ; which is the foundation of all the fym- 

 pathies of animal motions, whether of the irritative, fenfitive, or 

 voluntary kinds. 



Now as the fkin, which covers the face, is expofed to greater 

 variations of heat and cold than any other part of the body ; it 

 probably poflefies more mobility to fenfitive aflbciations, not on- 

 ly than the ftomach, but than any other part of the fkin ; and 

 is thence affe&ed at the eruption of the fmall-pox with violent 

 action and confequent inflammation, by the aflbciation of its mo- 

 tions with thofe of the ftomach, a day before the other parts of 



VOL. II. A A a the 



