524 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 17, 



Whenever the mineral appears between walls of conglomerate, the 

 faces of the latter are perfectly smooth. There are several other 

 breaks in the beds of congiomerate, running N.E. to S.W., but in 

 none of them was any mineral discovered. 



The cutting varies from 12 to 25 feet in depth, and is throughout 

 about 200 yards from the shore. In several places, when, in blast- 

 ing the sandstone, rock was reached below the conglomerate, finer 

 and thicker specimens of the mineral were discovered closely ad- 

 hering to the sandstone, and reaching 3| inches in thickness. 



No boring has as yet been attempted ; but during the length of 

 the cutting above mentioned, as many as thirty-six separate veins 

 of the mineral were met and cut through. 



10. On the Occurrence of Eocks of Upper Cretaceous Age in 

 Eastern Bengal. By T. Oldham, LL.D., F.K.S., F.G.S., &c. 



During the years 1851-52, I had an opportunity of visiting the 

 Khasi Hills, in Eastern Bengal, and made a tolerably large collection 

 of the fossils occurring in the rocks there. At that time the Geological 

 Survey of India had no office or place in which these fossils could 

 be opened out for examination, nor were there in India any collec- 

 tions sufficient for comparison, or any libraries containing the books 

 necessary for reference. I was, therefore, compelled to be satisfied 

 with such a cursory examination as could be made during the pack- 

 ing up of the specimens. This examination was even more cursory 

 than it would otherwise have been, inasmuch as my deeply re- 

 gretted friend Edward Forbes had promised to go carefully over all 

 these fossils and to describe any that proved new or interesting. 

 I had, by letter, pointed out to him the great interest which at- 

 tached to them, inasmuch as many of them strongly recalled some 

 of the forms which he had then recently described from the beautiful 

 collections of Messrs. Kaye and Cunliife from South India, while 

 other beds contained undoubted Nummulites and several known 

 " Nummulitic " fossils. The collection which I had made was 

 chiefly from the Nummulitic Limestone, close to the station of 

 Cherra Poonji ; but there was also a good number from the sand- 

 stones underlying this limestone, to which I especially requested 

 Prof. Forbes's attention, as they appeared to me to be of Cretaceous 

 rather than Tertiary age. 



These latter were, however, much fewer in number, because the 

 only season of the year during which I could visit these hills being 

 that of "the rains" (during which the average fall of rain at 

 Cherra Poonji is about 600 inches, concentrated in these four or five 

 months), it was not safe to do more than pay an occasional visit to 

 the lower country. But there was a sufficient number to have 

 yielded, on careful examination, a decisive result. 



I anxiously waited the result of this examination by Prof. 

 Forbes, and deferred the publication of any report on the geology of 



