%VAT£R OF THE DEAD SEA, g[« 



composed of copper pyrites (E), and then was discovered a chief!}' shist, 

 body of pebbles (F), jfearly 12 feet square, extending in shUt^^StriiL 

 width to the extreme branches of the flookan. In this part of proxideof 

 ihe lode the shist greatly predominates ; of course the pebbles '"* 

 are generally composed of shist, cemented jn some parts by 

 the same substance or chlorite, in others by oxide of tin, 

 which is generally crystallized, and in some of the crevices - 

 there is a little copper pyrites. It is singular, that a few peb- 

 bles (perlvaps not more than half a score) were found of quite 

 a different nature from the others ; they were composed of tin 

 in quartz coated with chlorite. 



The pebbles did not continue in a body fo the height of 

 more than 2 fathoms; but scattered bunches, and single peb- 

 bles, were found 4 fathoms above and 6 fathoriis below the 

 place in which they were at first discovered. It is only ne- 

 cessary to add, that the lode has since been worked 15 fa- 

 thoms deeper than where the pebbles occurred ; it there con- 

 sists for the most part of chlorite formed in a regular manner; 

 not the least trace of pebbles is to be seen, nor indeed of any 

 disturbance in the strata. 



I am, dear Sir, 



very sincerely yours, 



Penzance, Cornwall. JOSEPH CARNE. 



V. 



An Analysis of the Wafers of the Dead Sea and the River Jor- 

 dan. By Alexander Marcet, M. D. one of the Physi- 

 9ians to Guy's Hospital. Communicated, by Sjvf ithson Ten- 

 NANT, Esq.F.R.S*. 



T. 



HE Dead Sea, or Lake Asphaltite, is situate in the Dead S^, 

 southern part of Syria, near Jerusalem, and occupies an ex- 

 tent of about 60 or 70 miles in length, and from 10 to 20 in 

 breadth. This lake has been from time immemorial cele- 

 brated on account of the intense saltuess of its waters, which 



* Philos. Trans, for 1807, Part II, p. 296. 



