SALTER EUEYPTEEUS. 229 



which contains the fossil mentioned above (p. 227), and sandstone. 

 I have also marked the alluvial deposits at the junction of all the 

 larger streams with the Chandra-Bagha, which I have before alluded 

 to, taking as my theory, that the original structure of the country 

 produced a series of small lakes at different levels, until in process 

 of time the valleys were eroded down into a continuous line or slope 

 of drainage. 



The alluvial deposit of the plain of Kishtwar rests on limestone, 

 into which the river has cut down. The alluvium does not stretch the 

 whole way across the valley, but has been cut through on one side, 

 and the plain slopes gradually up to the hills on the west of the town. 



Fig. 11. — Outline-sketch of the hills above Kishtwar ; and Section of 

 the Alluvium on the hank of the Chandra-Bagha. 



1. Menzil. 3. Phuzaushurur. 5. Brahmah. 7. Eondu. 



2. Phuharum. 4. Sarwal. 6. Surputtu, 8. Kishtwar. 



At a place called Serai, where I have marked in a bit of alluvium, 

 it consisted of a mass of debris of all sorts, and I fancy must be the 

 rubbish of an old glacier which descended from Pipran. Great 

 streams of water must at some time have come down the valleys of 

 this region ; for all that run from Pipran and Dach to this junction 

 with the Kasher Kohl are strewed with granite-boulders. 



Iron is found in abundance at Dedreen and Seich, and made into 

 cannon-knees. It is smelted iu small furnaces, with bellows of goat- 

 skin, worked by hand. 



On some New Species of Eitrtpteeus ; with Notes on the Disteibu- 

 TioN of the Species. By J. W. Saltee, Esq., E.G.S., of the Geolo- 

 gical Survey of Great Britain. 



[Read June 23, 1858.] 



[Plate X.] 



The genus Eurypterus of De Kay, though long known in America* 

 and on the Continent, has attracted but little notice in this country 

 since the time that Dr. Hibbert published his outline -sketches of 



* Annals Lye. Nat. Hist. New York, vol. i. pis. 14, 29, 1826. 



