of a Spring on the Estate of Fordel, 4"c. 105 



The precipitate from another by benzoate of ammonia, weigh- 

 ed only one-twentieth of a grain, being so very indistinct that it 

 could not be wholly collected. 



7. Four pints of the water were evaporated to about three 

 ounces, the carbonates which the boiling had precipitated were 

 separated, and then the remaining liquid evaporated to dryness. 

 The dry matter weighed one grain seven-tenths. 



Upon it alcohol was poured and digested. The alcohohc so- 

 lution was poured off and evaporated to dryness. The residu- 

 um heated became black, and being redissolved in water yielded 

 some black flakes. 



What the alcohol had not dissolved was now boiled in a little 

 distilled water ; some earthy matter remained, weighing, after 

 being heated to redness, three-twentieths of a grain. 



This watei-y solution contained the ."salts of potash and soda, 

 with perhaps a little sulphate of magnesia. To try this, a drop 

 of it was added to a solution of carbonate of ammonia and phos- 

 phate of soda, upon which a slight cloudiness appeared. Car- 

 bonate of ammonia was now added to the solution, a little white 

 precipitate which fell down was separated, and the'solution be- 

 ing evaporated to dryness, the residuum, after being heated to 

 redness, weighed three-fourths of a grain. 



This substance was also blackened by the heating, and when 

 it was redissolved, a few black flakes separated. Nitromuriate 

 of platinum was now added, the solution evaporated to dryness, 

 and again redissolved. The yellow crystalline substance left, 

 after the liquid was decanted off", being dried, weighed .23 of a 

 grain, equivalent to .046 of a grain of potash, or .011 of a grain 

 in the pint. 



The liquid poured off' had the excess of platinum precipitated 

 by ammonia, and being evaporated to dryness, the matter left, 

 •after being heated to redness to expel the amraoniacal salts, 

 weighed eleven-twentieths of a grain. 



On this being redissolved, a few black flakes separated, weigh- 

 ing one-twentieth of a grain. The solution crystallized shewed 

 minute prismatic crystals of sulphate of magnesia. The mag- 

 nesia separated as ammoniaco-phosphate, weighed in that state 

 one-tenth of a grain, equivalent to .08 of a grain of sulphate of 

 magnesia, which, together with the one-twentieth of a grain of 



