io8 -DISEASES GLASS I. 2. 4. $. 



iations, though they have acquired but one name ; as one of them 

 attends hunger, and the other repletion ; though either of them, 

 jmay poffibiy be induced by affbciation with naufeous ideas. 



M. M. A blifier on the back. An emetic. Opium. Crude 

 rnercury. Covering the head in bed. See Sect. XXV. 16. Clafs 

 IV. i. i. 2. and 3. 



5. Cardialgla. Heartburn originates from the inactivity of 

 the flomach, whence the aliment, inftead of being fubdued by 

 digeftion, and converted into chyle, runs into fermentation, pro- 

 ducing acetous acid. Sometimes the gaftric juice itielf becomes 

 fo acid as to give pain to the upper orifice of the ftomach ; thefe 

 acid contents of the ftomach, on falling on a marble hearth, 

 have been feen to produce an efferyefcence on it. The pain of 

 heat at the upper end of the gullet, when any air is brought up 

 from the fermenting contents of the ftomach, is to be afcribed 

 to the fympathy between thefe two extremities of the cefophagus 

 rather than to the pungency of the carbonic gas, or fixed air j 

 as the fenfation in fwal lowing that kind of air in water is of a 

 different kind. See Clafs I. 3. JL. 3. and IV. 2. 2. 5. 



M. M. This difeafe arifing from indigeftion is often very per- 

 tinacious, and afflicting ; and attended with emaciation of the 

 body from want of fufficient chyle. As the faliva fwallowed 

 along with our food prevents its fermentation, as appears by the 

 experiments of Pringle and Macbride, fome find considerable re- 

 lief by chewing parched wheat, or maftic, or a lock of wool, fre- 

 quently in a day, when the pain occurs, and by fwallowing the 

 faliva thus efFufed ; a temporary relief is often obtained from an- 

 tiacids,or aerated alkaline water, Seltzer water, calcareous earths, 

 alkaline falts made into pills with foap, foap alone, tin, milk, 

 bitters. More permanent ufe may be had from fuch drugs as 

 check fermentation, as acid of vitriol ; but ftill more permanent 

 relief from fuch things as invigorate the digeftion, as a blifter on 

 the back ; a due quantity of vinous fpirit and water taken 

 regularly. Steel. Temperance. A fleep after dinner. A waift- 

 coat made fo tight as ilightly to comprefs the bowels and ftom- 

 ach. A flannel fliirt in winter, not in fummer. A lefs quan- 

 tity of potation of all kinds. Ten black pepper-corns fwallow- 

 ed after dinner. Half a grain of opium twice a day, or a grain. 

 The food fhould confift of fuch things as do not eafily ferment, 

 as flefti, fhell-fifli, fea-bifcuit, toafted cheefe. I have feen toaft- 

 ed cheefe brought up from the ftomach 24 hour^ after it had 

 been fwallowed, without apparently having undergone any- 

 chemical change. See Clafs II. i. 3. 17. and IV. i. 2. 13. 



It is probable that violent cardialgia is moil frequently owing 

 to increafe of the quantity or acidity of the gaftric juice, rather 



than 



