106 Mr. Horner on the Brine Springs ot Droitwicb. 



b. To this solution I added oxalate of ammonia in excess : the 

 precipitate after being well washed, and dried in a heat not 

 exceeding 165°, weighed 5.6S grs. which is equal to 2.01 grs. of 

 lime, or 0.67 gr. in an ounce, according to the proportions of Dr. 

 Thomson* of 35.5 of lime in 100 parts of the oxalate. 



c. To the clear solution from which the lime had been thrown 

 down, I added ammonia, and as it produced no change I concluded 

 that no sulphate of magnesia exists in the brine. 



But as 2.01 grs. of lime will only take up 2.9 grs. of sulphuric 

 acid, I infer that the remaining 4.47 grs. of acid must be combined 

 v/lth soda. 



Recapitulation. 



1. By Exp. A. it has been shewn that one ounce measure of 

 the brine contains 64.7 grs. of muriatic acid, and as by Exp. B. e. 

 it has been shewn that there is no muriate of lime, the whole of 

 this muriatic acid must be in combination with soda, with the 

 exception of the small quantity of muriate of magnesia found by 

 Exp. B. f. g. Muriate of magnesia, according to Dr. Marcetj-f- 

 contains 56.01 per cent, of acid, therefore deducting 0.18 gr. for 

 the acid contained in the 0.32 gr. of muriate of magnesia obtained 

 In Exp. B. from three ounces of the brine, or 0.06 for that con- 

 tained in one ounce, there will remain 64.64 grs. of muriatic acid, 

 which is equal to 140.52 grs. of muriate of soda in one ounce of 

 the brine, according to the proportions of Dr. Marcet of 46 acid 

 and 54 soda in 100 parts of salt-t 



2. By experiment C. b. it has been shewn that three ounces of 

 brine yielded 5.68 grs, of oxalate of lime, dried at 165°; and by 



* Henry's Elements of Chemistry, sixth edition, vol. ii. pj^e 141. 

 t Analysis of the Dead Sea, Phil. Traas. 1S07. 



