CLASS IV. 2.2.11. OF ASSOCIATION. 421 



i i. Teftittm dolor nephriticus. The pain and retracYion of the 

 tefticle on the fame fide, when there is a ftone in the ureter, is 

 to be afcribed to fenfitive aifociation ; whether the connecting 

 caufe be a branch of the fame nerve, or from membranes, which 

 have been frequently affected at the lame time. 



12. Dolor digiti minimi fympatheticus. When any one acci- 

 dentally ftrikes his elbow againft any hard body, a tingling pain 

 runs down to the little finger end. This is owing to fenfitive 

 affbciation of motions by means of the fame branch of a nerve, 

 as in hemicrania from a decaying tooth the pain is owing to the 

 fenfitive affociation of tendons or membranes. 



13. Dolor brachiiin hydrope peftoris. The pain in the left arm 

 which attends fome dropfies of the cheft, is explained in Seel:. 

 XXIX. 5. 2. 10. which refembles the pain of the little ringer 

 from a percuflion of the nerve at the elbow in the preceding ar- 

 ticle. A numbnefs of this kind is produced over the whole leg, 

 when the crural nerve is much comprefled by fitting for a time 

 with one leg crofled over the other. 



Mr. , about fixty, had for two years been affected with 



difficulty of refpiration on any exertion, with pain about the fter- 

 num, and of his left arm ; which lad was more confiderable 

 than is ufual in dropfy of the cheft ; fome months ago the pain 

 of his arm, after walking a mile or two, became exceffive, with 

 coldnefs and numbnefs ; and on the next day the back of the 

 hand, and a part of the arm fwelled and became inflamed, which 

 relieved the pain ; and was taken for the gout, and continued 

 feveral days. He after fome months became dropfical both in 

 refpect to his cheft and limbs, and was fix or feveri times per- 

 fectly relieved by one dram of faturated tincture of digitalis, 

 taken two or three times a day for a few days in a glafs of pep- 

 permint water. He afterwards breathed oxygen gas undiluted, 

 in the quantity of fix or eight gallons a day for three or four 

 weeks without any effect, and funk at length from general de- 

 bility. 



In this inftructive cafe I imagine the prefiure or ftimulus of 

 one part of the nerve within the cheft caufecl the other part, 

 which ferves the arm, to become torpid, and contequenily cold 

 by fympathy ; and that the inflammation was the confequence 

 of the previous torpor and coldnefs of the arm, in the fame 

 manner as the fvvelling and inflammation of the cheek in tooth- 

 ach, in the firft fpecies of this genus , and that many rheumatic 

 inflammations are thus produced by fympathy with fome dif- 

 tant part. 



14. Diarrhoea a dentitione. The diarrhoea, which frequently 

 attends dentition, is the confequence of indigeftion ; the aliment 



acquires 



