158 DISEASES CLASS II. i. i. 9 . 



body only are produced ; and for a time the patient becomes re- 

 lieved by the metaftafis and elimination of the offending material 

 by fenfitive exertion. For a further account of this intricate 

 fubjea feeClafsIII. i. i. 10. 



M. M. To relieve the paroxyfm a tea-fpoonful of ether may 

 be given mixed with water, with 10 drops of laudanum, to be 

 repeated three or four times. Venefedion. An emetic. A 

 bliiler. Afterwards the Peruvian bark, with a grain of opium 

 at night, and two or three of aloes. A flannel fhirt in winter 

 but not in fummer. IlTues. Digitalis ? 



In this fpecies of afthma, there is great reafon to believe, that 

 the refpiration of an atmofphere, with an increafed proportion of 

 oxygen, will prove of great advantage ; fome well obferved and 

 well attefted cafes of which are publimed by Dr. Beddoes ; as 

 this purer air invigorates the circulation, and the whole fyftem 

 in confequence, perhaps not only by its ftimulus, but by its fup- 

 plying the material from which the fenforial power is extracted 

 or fabricated. In fpafmodic afthma, on the contrary, Dr. Fer- 

 riar has found undoubted benefit from an atmofphere mixed with 

 hydrogen. See Sed. XVIII. 15. and Clafs III. i. i. 10. 



9. NiHitatiofenfitiva. Winking of the eyes is performed eve- 

 ry minute, without our attention, for the purpofe of difFufing 

 the tears OVCIF them, which are poured into the eye a little above 

 the external corner of it, and which are afterwards abforbed by 

 the lachrymal points above and below the internal corner of it. 

 "When this operation is performed without our attention, it is 

 caufed by the faculty of irritation, and belongs to Clafs I. 1.4. 

 i. but when it is produced by a ftronger ftimulus of any extra- 

 neous material in the eye, fo as to caufe pain, the violent and fre- 

 quent nictitation is caufed by the faculty of fenfation. 



This difeafe is fometimes produced by the introverfiori of the 

 edge of the lower eyelid, which bends the points of the hairs of 

 the eyeladi upon the ball of the eye, which perpetually (limulate 

 it into painful fenfation. This introverfion of the eyelid is gen- 

 erally owing to a tumour of the cellular membrane below the 

 edge of the eyelid, and though a very troublefome complaint may 

 often be cured by the following fimple means. A little common 

 plafter fpread on thin linen, about a quarter of an inch long, 

 rnuft be rolled up fo as to be about the fize of a crow-quill ; 

 this mull be applied immediately below the eyelafh on the out- 

 fide of the eye, and muft be kept on by another plafter over it. 

 This will then aft as a flight compreilion on the tumor under 

 the eyelafh, and will prevent the hairs from touching the eye- 

 ball. In a week or two the comprcffion will diminiih the tu- 

 mor it lies over, and cure this painful deformity. 



I o. Of at at id 





