450 The Annals and Magazine of Natural History. 



at present. We have observed detached low irregular hills and knolls 

 of boulders, and rounded masses in various situations at the foot of the 

 Himalaya, for which we were quite unable to account. These low 

 ranges at the pass where the Gogra enter the plains of Hindustan, 

 extend parallel to the main chain at a distance probably of hah a mile 

 or more from the precipitous face of the mountain, and from which they 

 are separated by a low valley. It is therefore probable, that these and 

 similar piles of boulders, which will be found in many instances to 

 skirt the mountains of India, may be owing to the causes referred 

 to by M. Agassiz. 



Official papers on Isinglass, received from the Government. 



The following are the names of the fish procurable here, 

 the sounds of which are used as an article of trade : — 



Ka-tha, Ka-ku-yan, No. (4), Ka-tha-bam,No. (1), Ka-pa- 

 yin, Ka-kun, No. (2), Nat-ka-dan. No. (3*) The whole of 

 the above produce isinglass, but the largest kind is procured 

 from the Ka-pa-yin ; this fish measures from four to six feet 

 in length, and produces a sound from one to one and a half 

 viss in weight ; the next largest is the Ka-ku-yan, a larger 

 species of the Ka-tha, or " Polynemus Sele," probably 

 Polynemus ploteus. The fishermen state, that the whole 

 of the above mentioned fish have no particular season 

 for shoaling, with the exception of the Ka-ku-yan, which is 

 procurable in larger quantities during the dry season than 

 at any other portion of the year ; this statement, however, is 

 purely gratuitous, as the following remarks will shew. 



The whole of the above mentioned fish are caught the 

 whole year round, the smaller kinds by means of the com- 

 mon fishing stakes, and the larger with a description of 

 trap, called by the natives tsan-dah, which are usually made 

 in deeper water than the fishing stakes, generally with 

 a depth of 10 or 12 feet at low water spring tides, with a 

 rise of 18 to 22 feet ; they are so formed that the fish on 

 * Nos. corresponding with those attached to the specimens. 



