22 DISEASES CLASS 1.1.2. 7: 



M. M. Cool air, diluents, warm bath, evacuations. 



7. Cxtarrkus calidus. Warm catarrh. Confifts in an in- 

 creafed Tecretion of mucus from the noftrils without inflamma- 

 tion. This difeafe, which is called a cold in the head, is fre- 

 quently produced by cold air acting for forne time on the mem- 

 branes, which line the noftrils, as it pafles to the lungs in refpi- 

 ration. Whence a torpor of the action of the mucous glands 

 is firlt introduced, as in Clafs I. 2. 3. 3. ,and an orp;afm or in- 

 creafed action fucceeds in confequence. Afterwards this orgafm 

 and torpor are liable to alternate with each other for fome time 

 like the cold and hot fits of ague, attended with deficient or exu- 

 berant fecretion of mucus in the noftrils. 



At other times it arifesfrom reverfe fympathy with fome ex- 

 tenfive parts of the {kin, which have been expofed too long to 

 cold, as of the head, or feet. In confequence of the torpor of 

 thefe cutaneous capillaries thofe of the mucous membrane of the 

 noftrils act with greater energy by reverfe fympathy ; and thence 

 fecrete more mucus from the blood. At the fame time the ab- 

 forbents, acting alib with greater energy by their reverfe fym- 

 pathy with thole of fome diftant part of the fkin, abforb the 

 thinner parts of the mucus more haftily ; whence the mucus is 

 both thicker and in greater quantity. Other curious circumftan- 

 ces attend this difeafe ; the. membrane becomes at times fo thick- 

 ened by its increafed aclion in fecreting the mucus, that the pa- 

 tient cannot breathe through his noftrils. In this fituation if he 

 v/arms his whole Ikin fuddenly by fire or bed-clothes, or by- 

 drinking warm tea, the increafed aclion of the membrane ceafes 

 by its reverfe fympathy with the fkin ; or by the retraction of 

 the fenforial power to other parts of the fyftem ; and the patient 

 can breathe again through the noftrils. The fame fometimes oc- 

 curs for a time on going into the cold air by the deduction of 

 heat from the mucous membrane, and its confequent inactivity 

 or torpor. Similar to this when the face and breaft have been 

 very hot and red, previous to the eruption of the fmall-pox by 

 inoculation, and that even when expoled to cool air, I have cb- 

 ferved the feet have been cold ; till on covering them with warm 

 flannel, as the feet have become warm, the face has cooled. See 

 Sea. XXXV. i. 3. Clafs II. 1.3.5. IV. 2. 2.10. IV. 1.1.5. 



M. M. Evacuations, abftmence, oil externally on the noie, 

 warm diluent fluids, warm fhoes, warm night-cap. 



8. Expeftwr.tio calida. Warm expectoration confifts of the 

 Increafed fecretion of mucus from the membrane, which lines 

 the bronchia?, or air-cells of the lungs, without inflammation. 

 This increafed mucus is ejected by the action of coughing, and 



