204 Proceedings of the Asiatic Society. [No. 2. 



Esq., Assistant Resident, Malacca, during a journey to Mount Ophir 

 Gold Field, and the Eiver Moor, together with a note on the same 

 by Professor Oldham. 



11. From H. Piddington, Esq., Curator Museum of Economic 

 Geology, submitting a paper for the Journal on the quantity of Silt 

 held in suspension by the waters of the Hooghly at Calcutta in each 

 month of the year. 



The Librarian and Curator submitted their usual monthly reports. 



Report of the Curator, Museum of Economic Geology. 



Geological. — Forwarding, now some two or three years ago, some speci- 

 mens sent down by my friend Major Jenkins for that purpose to a relative 

 of his, the Very 'Rev. Canon Rogers of Exeter Cathedral, I took occa- 

 sion to request of that gentleman the favour of any specimens with 

 which he could oblige us, sending him at the same time one of the cir- 

 culars of the Museum of Economic Geology ; and he has in return* sent 

 us two small boxes containing 25 fine specimens of ores and rocks, almost 

 all of which will be additions to our cabinets. The catalogue is annexed. 



I have received from the Government of Bengal, the accompanying 

 report on the gold country about Mount Ophir at Malacca, with Professor 

 Oldham's remarks on it, but I have not yet received the specimens which 

 Professor Oldham was to send to us. I suggest that these reports will 

 make a good paper for the journal. 



Museum of Economic Geology. — Major Baker has procured for us through 

 Colonel Napier two fine specimens of the iron ores of Korana described 

 in my Report Journal ~No. 2 of 1853, one of which is the Isomorphic Car- 

 bonate of iron therein described, in its rock of milk quartz, and the other 

 explains a word in Mr. Purdon's report, which I forbore at the time to 

 remark upon, thinking that it must have been an oversight. It will be 

 seen page 208 that that gentleman calls the iron ore of Korana a Haematite, 

 while my analysis proves it to be a carbonate ; but the second specimen 

 of the two now sent shews that we are both right ; for this last specimen is 

 a fine Haematite and would probably furnish a first rate quality of iron if 

 properly smelted. There is also a specimen of the rock of the Korana hill 

 which is a schistose hornblende sandstone upon a hard grey sandstone 

 rock. 



I have in hand a large collection of 70 specimens from Captain Haugh- 

 ton from the S. W. frontier, but these being but partially examined and 



* The boxes seem to have been delayed at the India House for a long time. 



