AnalyffsofthePrattrofiheMerofDiJi. %Y 



. I next examined the water of Difs Mere (No. i.),and I was at length led on, ftep by ftep,. 

 to make a regular analyfis of the fixed ingredients. Before I made the aiialyfis, I examined 

 this water with certain re-agents, and remarked the following properties, i. The water of 

 Difs Mere has a yellowilh tinge, and the flavour is rather liiline j but it has not any perceptible 

 odour, 2. Pruffiate of potalh did not produce any eiFefl. 3. Acetite of lead produced a 

 flight white precipitate. 4. Nitrate of filver formed one very copious. 5. Tindture of galls 

 had not any effcdt. 6, Muriate of barytes caufed a flight precipitate, 7. Ammoniac, pot- 

 afli, and oxalic acid, feverally produced precipitates, when added to different portions of this 

 water. 



Analyfa. 



A. Three hundred cubic inches of the water, by a gentle evaporation, left a pale brown 

 fcaly fubftance, which weighed 58 grains, B. Thefe 58 grains were digefted in alcohol, 

 without heat, during 24 hours, and afforded a folution, which, by evaporation, yielded 

 muriate of lime, flightly tinged by marfhy extraft, i8 grains, C. Six ounces of diflilled 

 water were then poured on the refiduum, and, with repeated ftirring, remained during 24- 

 hours. By evaporation, this afforded muriate of foda, with a very fmall portion of fulphate 

 of foda; in all, 10 grains. D. What remained was boiled in 800 parts ofdiftilled water, and 

 the folution being evaporated, left of felenite 1.70 grains. E. The undiflTolved portion now 

 weighed 25 grains, and was digefted with diluted muriatic acid : a great part was diffolved,' 

 with much effervefcencc, and, being filtrated, afforded, by ammoniac, of alumine 1.50 gr. 

 From this I afterwards feparated a very minute quantity of iron, by means of prufliate of pot- 

 afll. F. Carbonate of foda was then added to the liquor, and precipitated carbonate of lime- 

 20 grains. G. The infoluble refiduum weighed 3.50 gr. ; and proved to be principally car- 

 bon (produced by decompofed vegetable matter), with a very fmalj quantity of fUiceous earth.- 

 The lefult of this analyfis was, therefore, 



B. Muriate of lime - - - - - 18 



C, Muriate of foda, with a very finall portion of fulphate of foda. 10 



D. Selenlte - - - - - - i 70 



E, Alumine, with a portion of iron too fmall to be efliraated - i 50. 



F, Carbonate of lime - - - - - aa 



G. Carbon, with a little filiceous earth - - - 3 50. 



54 70 

 Lofs 3 30 



58 o 



It is worthy of notice, that the iron prefent was in fo very fmall a quantity as not to be de-i 

 te£tedby any tefl, till it had been feparated in conjunction with the alumine. 



The water. No. 5, from Mr. Wifeman's account, does not appear to have been concerned'- 

 Vol. III.— May 1799. M in 



