48 DISEASES CLASS I. i. 5. 6. 



excite our attention : hence our own pveflure en 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. Plat- 

 ters of cerate with caiamy. 



6- Senfus 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. i. 2. See Seel:. XIV. 8. -All the above increafed actions of 

 cur organs of fenfe feparately or jointly accompany fome fevers, 

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

 ception of the leaft light, noifes in their ears, bad fmells in the 

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

 2nd other uneafy feels, and with difagreeable fenfations of gen- 

 eral or partial heat. 



7. Senfus extenftonis acrior. Acuter fenfe of extenfion. The 

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

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

 ed with faintnes 5. and its excefs with fenfations of fulnefs, or 

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

 mufcles, which are di (tended by their appropriated fluids ; but 

 the longitudinal mufcles are alfo affecled by different quantities 

 of 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 Ikin 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 preiTed againft the fibres of mufcles or membranes, 

 there would feem to be three Mates or flages of this extenfion of 

 the fibres ; which have acquired names according to the degree 

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

 are i. titillation or tickling ; 2- itching ; and the 3. fmarting, 

 as defcribed below. See Sea. XIV. 9, 



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

 extenfion above mentioned, and therefore excites laughter ; as 

 defcribed in Sea. XXXIV. r. 4. The tickling of the nortrils, 

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

 irritation occafioned by external ftimulus ; and is attended with 

 a pleafurable fenfation in confequence of the increafed aaion of 

 the part. When this aaion 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 



