Class II. i. 3. 17. OF SENSATION. 215 



fever. On the fecond day red Toots, like parts flung with net- 

 tles, are feen ; which almoft vanilh during the day, and recur in 

 the evening with the fever, fucceeded in a few days by very mi- 

 nute fcales. See Tranf. of the College, London. 



17. Aphtha. Thrum. It has been doubted, whether aphtha 

 or thrufh, which confifts of ulcers in the mouth, mould be enu- 

 merated amongft febrile difeafes ; and whether thefe ulcers arc 

 always fymptomatic, or the confequence rather than the caufe of 

 the fevers which attend them. The tongue becomes rather 

 fwelled ; its colour and that of the fauces purplilh 5 fioughs or 

 ulcers appear firft on the throat and edges of the tongue, and 

 at length over the whole mouth. Thefe fioughs^are whitifn, 

 fometimes diftincT:, often coalefcing, and remain an uncertain 

 time. Cullen. I ftiall concifely mention four cafes of aphtha, 

 but do not pretend to determine whether they were all of them 

 fymptomatic or original dileafes. 



Aphtha fenfitiva. A lady during pregnancy was frequently 

 feized with ulcers on her tongue and cheeks, or other parts of 

 the mouth, without much apparent fever ; which continued two 

 or three weeks, and returned almoft every month. The thruih 

 in the mouths of young children feems to be a fimilar difeafe. 

 Thefe ulcers refemble thole produced in the fea-fcurvy, and have 

 probably for their caufe an increafed aclion of the fecerning 

 fvftem from increafed fenfation, with a decreafed aclion of the 

 abforbent fyftem from decreafed irritation. See Clafs I. 2. 1. 14. 



M. M. Solutions of alum, of blue vitriol. Powder of bark 

 taken frequently into the mouth in very fmall quantity. See 

 Clafs II. 1. 3. 1. 



Aphtha irritata. Inflammatory aphtha. A cafe of this kind 

 is related under the title of fuppurative rheumatifm. Clafs IV. 

 2. I. 16. 



* Aphtha inirritata. Sloughs or ulcers of the mouth, attended 

 with fenfitive fever with great arterial debility. They feem to 

 fpread downwards from the throat into the ftomach, and proba- 

 bly through the whole inteftinal canal, beginning their courfe 

 with cardialgia, and terminating it with tenefmus j and might 

 perhaps be called an eryfipelas of this mucous membrane. 



M. M. Cool air. A fmall blifter on the back. Bark. Wine. 

 Opium in fmall repeated quantities. Soap neutralizes the gaf- 

 tric acid without eifervefcence, and thus relieves the pain of car- 

 dialgia, where the ftomach is aftecled. Milk alfo deftroys a part 

 of this acid. Infufion of fage-leaves two ounces, almond-foap 

 from five grains to ten, with fugar and cream, is generally both 

 agreeable and ufeful to thefe patients. See I. 2. 4. 5. 



Where the ftomach may be fuppofed to be excoriated by poi- 



foxzs 



