314 Dr. Marcets’ Analysis , &c. 
3. Distilled water being thrown on this residue, a minute 
portion of it remained undissolved, and on pouring an acid on 
this substance, a distinct effervescence was produced, showing 
the presence of carbonat of lime. 
4. From the clear fluid a precipitate was obtained by oxalat 
of ammonia, which, dried but not calcined, weighed 0,12 
grains. 
5. From the remaining clear solution a magnesian preci- 
pitate was produced by ammonia and phosphoric acid, which, 
after driving off the ammonia by heat, weighed 0,18 grains. 
6 . The solution had suffered too many alterations to allow 
me to separate, with any degree of accuracy, the muriat of 
soda ; but from a variety of circumstances, I thought it not 
unlikely that it would have been found pretty nearly in the 
same proportions, with respect to the other salts, as it exists in 
the Dead Sea. 
The inference I drew from this was, that the River Jordan 
might possibly be the source of the saline ingredients of the 
Dead Sea, or at least that the same source of impregnation might 
be common to both. This inquiry, however, would require a 
much more correct knowledge both of the proportions of the 
salts* and of local circumstances, than I have ben able to obtain. 
