Observing the success of the Ammonia in the case which I have mentioned above, I had recourse to it myself in the same manner, but found it so disagreeable to the stomach, that it frequently produced vomiting. This indeed removed the tendency to Night-Mare, but it equally prevented my rest. I tried some of the other alkaline salts, but with no better success; the reason of which was, I believe, that I drank them dissolved in some cold liquor, upon an empty stomach, at the time that the disease was most troublesome to me, that is, early in the morning. Finding the stomach reject the alkalies in this simple form, I made a variety of attempts to render them palatable, and at length hit on the method of dissolving them in ale, or porter, and fixed on the Carbonate of Soda as the most agreeable of them. This experiment proved of more service to me than I expected; for I soon found it to be, not a nauseous draught, like the aqueous solution, but a delicious beverage, which I could drink with great pleasure; for the porter or ale, which is generally greatly inclining to acidity, was much benefited and improved by it. The carbonate of soda becomes partially decomposed by the acid of the liquor, and parts with a great portion of its carbonic acid gas, which causes the liquor to foam up, and imparts to it the appearance and flavour of bottled porter or ale. Having thus ameliorated the malt liquor itself, I grew fond of it, and drank as much every day as would receive about a drachm of the carbonate of soda, only at my meals; but whenever I found that sense of oppression about the præcordia which indicated the predisposition to Night-Mare, I had immediate recourse to a large dose of the soda, and always obtained relief. This salt not only corrects the acidity in the _primæ viæ_, but likewise brings away by stool a quantity of viscid slimy matter, so acrid, as to burn and excoriate the parts as it passes out. As I constantly persisted in the use of this alkaline salt, and got rid of this trash from the body, my appetite, which had long been lost and depraved, returned, and the digestive organs performed their functions again with ease and success. But still the propensity to acidifying remains, and a cautious attention to diet, and to the evacuations is always necessary. By perseverance in a plan founded on these principles, I found my enemy at length subdued, and brought under a degree of control which I had never hoped to obtain, and this circumstance has induced me to give to the world, (and more particularly to those labouring under the same disease,) my opinions and advice. By a close attention to the latter, I do not doubt but they will succeed in driving from their couch this fiend of night, this enemy of repose.