1856.] Proceedings of the Asiatic Society. 563 



" The copper is also partly present as a sulphuret, partly as oxide ? 

 The proportion of metallic copper amounts to 70 per cent." 



The Curator of the Museum of Economic Geology read a report. 



The Librarian submitted his usual monthly report. 



Mr. Oldham at the request of the President, described in detail 

 the Geological structure of the Talcheer Coal field, in the tributary 

 mehals of Cuttack, which had been examined during the past season 

 by Messrs. Blanford and Theobald attached to the Geological Sur- 

 vey, illustrating his remarks by maps and sections of the field. The 

 full details will shortly be published. 



On the motion of the Chairman, the best thanks of the Society 

 were voted to Mr. Oldham for his very interesting information. 



Report of the Curator, Museum of Economic Geology. 



Geological and Mineralogical. — We some time ago received from Cap- 

 tain Blagrave, a collection of rocks and minerals from the hills of Shahkol, 

 Sanglee and Chemot (?) in Jhung, but I was, and have been since, pre- 

 vented from taking them up by other researches then on hand. This I 

 hope to do forthwith, but I mention them here that the donation may be 

 on record, which it should have been earlier had I not proposed first to 

 examine them before mentioning them and then passed them over for 

 more urgent matters. 



In the Rev. Mr. Hislop's collection from Nagpore, I have found a very 

 fine specimen of the scarce mineral Condrodite, which is upon the table, 

 as well as the museum specimen of it from New Jersey, U. S. 



From Dr. Spilsbury we have received a specimen of Schorl in quartz 

 from Choor Serai, North of Nagpore. 



I have had to revise my second paper on the silt of the Hooglily 

 announced at a former meeting, and in consequence of the farther views 

 to which I have been led, to repeat several of the examinations, and to 

 add some new ones, which has delayed it greatly : I now present it complete 

 for the Journal. 



Economic Geology. — We have received a series of copper ores from Dr. 

 Campbell of Darjiling, who was in hopes that he had found blue copper 

 (the azurite or blue carbonate of copper) amongst them, but this was 

 merely a deceptive appearance, and the ores are the same unpromising 

 sulphurets as before, in a very tough rock, and apparently not found in 

 large masses. However this is but the surface indication, the produce of 

 a shaft or gallery may be something widely differing. 



3 b 2 



