4^ DISEASES Class I. i. 5. 6. 



excite our attention I hence our own pre Mure on the parts, we 

 reft upon, becomes uneafy with univerfal forenefs. 



M. M. Soft feather-bed. Combed wool put under the pa- 

 tients, which rolls under them, as they turn., and thus prevents 

 their friction againft the meets. Drawers of foft leather. Plaf- 

 ters of cerate with calamy. 



6. Sen/its caloris acrior. Acuter fenfe of heat occurs in fome 

 difeafes, and that even when the perceptible heat does not appear 

 greater than natural to the hand of another perfon. See Ciafs 

 I. 1.2. See Sect. XIV. $. All the above increafed actions of 

 our organs of fenfe feparately or jointly accompany fome fevers, 

 and fome epileptic difeafes \ the patients complaining of the per- 

 ception of the leafl: light, noifes in their ears, bad fmells in the 

 room, and bad taftes in their mouths, with forenefs, numbnefs, 

 and other uneafy feels, and with difagreeable fenfations of gen- 

 eral or partial heat. 



7. Sen/us extenfiotris acricr. Acuter fenfe of extenfion. The 

 fenfe of extenfion was fpoken of in Sect. XIV. 7. and XXXII. 

 4. The defect of diftention in the arterial fyftem is accompani- 

 ed with faintnefs ; and its excefs with fenfations of fulnefs, or 

 weight, or preffure. This however refers only to the vafcular 

 mufcles, which are diftended by their appropriated fluids 5 but 

 the longitudinal mufcles are alfo affected by different quantities 

 ol extenfion, and become violently painful by the excefs of it. 



Thefe pains of mufcles and of membranes are generally 

 divided into acute and dull pains. The former are generally 

 owing to increafe of extenfion, as in pricking the fkin with a 

 needle ; and the latter generally to defect of extenfion, as in 

 cold head-aches *, but if the edge of a knife, or point of a pin, 

 be gradually preffed againft the fibres of mufcles or membranes, 

 there would feem to be three ftates or ftages of this extenfion of 

 the fibres \ which have acquired-names according to the degree 

 or kind of fenfation produced by the extenfion of them ; thefe 

 are 1. titillation or tickling ; 2. itching \ and the 3. fmarting, 

 as defcribed below. See Sect. XIV. 9. 



8. Titillatio. Tickling is a pleafurable pain of the fenfe of 

 extenfion above mentioned, and therefore excites laughter ; as 

 defcribed in Sect. XXXIV. 1. 4. The tickling of the noftrils, 

 which precedes the efforts of fneezing, is owing to the increafed 

 irritation occafioned bv external ftimulus ; and is attended with 

 a pleafurable fenfation in confequence of the increafed action oi 

 the part. When this action is exerted in a greater degree, the 

 fenfation becomes painful, and the convulfion. of fneezing en- 

 fues *, as the pain in tickling the foles of the feet of children is 

 relieved by laughter. 



A 



