Class II. 1.2.5. 0F SENSATION. 1 7 ! 



difficulty of breathing ; and gives this as a criterion to diflin- 

 guifh the angina polypofa from the afthma acutum. Annals of 

 Medicine, Vol. I. But in the cafes of true croup, peripneumo- 

 nia trachealis, I have feen with furprife the difficulty of refpira- 

 tion to ceafe for a time, and return again with unabated violence. 

 Thefe remiflions of the difficult refpiration are alio mentioned 

 by Dr. Ferriar, who then terms it a fpurious croup, but which 

 I fufpecl to be owing (imply to the following circumftances. 



In a common catarrh, when the mucous membrane of the 

 noftrils is much inflamed, it becomes fo thickened as totally to 

 prevent refpiration through them •, yet on fuddenly warming the 

 ikin, by drinking tea or by a fire, and fometimes by only cooling 

 the membrane of the noflrils by going into the cold air, the fwel- 

 jing of this membrane will fuddenly fubfide, fo as to permit the 

 air to pafs through quite eafily for a time, as explained in ca- 

 tarrhus calidus. Clafs I. r. 2. 7. The fame circumftance may 

 occur to the inflammation of the membrane, which lines the up- 

 per part of the trachea, or it may happen from the doubling of 

 the loofened upper part of the adhefive mucus. 



M. M. Frequent bleeding by the lancet or leeches. A few 

 grains of calomel. Seneca. Blifters about the throat. An 

 opiate in fmall quantity at night after previous evacuations. 

 Mercurial ointment. Warm bath. Breathing over the fleam 

 of warm water, with or without volatile alkali, or ether, or vine- 

 gar. Particular attention fhould be ufed to keep the child railed 

 high in bed. Might the fkin be kept agreeably warm, and at 

 the fame time might quite cold air be breathed through a tube 

 coming from without, through a broken window, or hole in a 

 door r Or might the child be carried out into the cold air very 

 warmly clad ? If a folution of fublimate could be fafely ufed, 

 as in gonorrhoea, Clafs II. 1.5. 1 ? 



After evacuation by copious venefeclion, might not the fre- 

 quent application of ether externally to the throat be ferviceable ? 

 And where there occur intervals of eafy refpiration, might not 

 breathing ever the duft of powdered Peruvian bark prevent a re- 

 turn of the thickening of the membrane, as defcribed in Clafs II. 

 1. 6. 7. 



5. Pkuritis. Pleurify. Inflammation of the pleura, with 

 hard puife, pain chiefly of the fide, pungent, particularly increaf- 

 ed during infpiration ; lying on either fide uneafy, the cough 

 very painful, dry at the beginning, afterwards moift, often bloody. 



One caufe of pleurify is probably a previous adhefion of the 

 lungs to a part of the pleura, which envelopes them. This in 



ring children 



many cafes has been produced in infancy, by futfe 

 to lie too long on one fide. Or by placing: them unif 



■& 



by placing them uniformly on one 



fid* 



