488 Proceedings of the Asiatic Society. [No. 6. 



10. From R. Watson, Esq., forwarding a slab of flexible Sandstone, 

 presented by Capt. Douglas. 



11. From M. l'Abbe J. M. T. Guerin, presenting to the Society a 

 copy of his work on Indian Astronomy. 



After some desultory conversation regarding the Society's Museum 

 of Economic Geology, it was moved by Rev. J. Long, seconded by Mr. 

 Mitchell and resolved — 



That the Council be requested to procure from Mr. Piddington, as 

 Curator of the Museum of Economic Geology, a report of what he has 

 done in that Department during the last twelve months. 



The Librarian and the Zoological Curator having submitted their 

 reports, the meeting adjourned. 



Confirmed 3rd, August, 1850. 



J. W. Colvile, President. 

 Fletcher Hayes, Secretary. 



Report of the Curator Museum of Economic Geology for July, 1849.* 



Geology and Mineralogy, — We have received from Captain Ommanney, 

 Executive Engineer, 3d Division, a box of specimens, with a paper describing 

 the site at which they were found, which may be thought worth printing in 

 the Journal. From the description given I am inclined to suppose these 

 stones form part of the ruins of some attempt at a barrage of a river for the 

 purpose of irrigation, and that the wells described by Captain Ommanney 

 are those belonging to an ancient subterranean water course, the kan~ 

 naughtsf of the Persians, which are more or less known from Affghanistan 

 and Persia to Constantinople, which city is still dependant upon them for 

 much of its supplies of water. 



Mr, Wm. Theobald, Junr. has sent us a miscellaneous collection of Indian 

 and European rocks, minerals and fossils, out of which we shall be able to 

 select a number of good ones, either as new varieties or duplicates, for our 

 Cabinets. 



* Having been mislaid, this Report was not published along with the pro- 

 ceedings for July, 1849. 



t I do not know of any remains of them described in India, but it is difficult to 

 suppose that the followers of the Mogul Emperors did not bring with them, and 

 practice, the art of constructing these ; and that, as here, the attempts often failed 

 by the caprices of our Indian rivers. 



