266 GEOLOGICAL SURVEY OF INDIA. 



that branch, of the Survey publications. Dr. Waagen also furnished 

 two parts (Nos. 3 and 4) of the Brachiopoda of the Productus 

 Limestone, and a huge fasciculus of Series XIV., with 18 

 admirably executed plates descriptive of the tertiary and upper 

 cretaceous fossils of Sind, was issued from the pen of Professor 

 Martin Duncan. 



Some interesting contributions of ores, rocks, and other 

 geological specimens were made to the museum from the Inter- 

 national Exhibition held iu Calcutta, the principal presentations 

 being made by the Ministers for Mines in New South Wales and 

 Victoria, and the Tasmanian Commissioners. 



During 1885 Mr. E. D. Oldham took a trip to Australia to enable 

 him to study the Gondwana rocks of that region, and his memo- 

 randum on the correlation of the Indian and Australian coal -bearing 

 beds is published in Vol. XIX., Part 1, of the " Records." Dr. King 

 was chiefly engaged in directing the practical exploration of the 

 Rampur coal field, which is the southern portion of the Raigarh 

 and Hingir basin, formerly surveyed by Mr. Ball in 1876, but 

 unfortunately the coal has proved uniformly bad in quality. 



During 1884-85 Mr. Foote was able to take up his survey in the 

 Bellary district, from which he had been called away in the 

 previous season to search for coal in the gneiss of Haidarabad. The 

 Sandur hills to the west of Bellary were the principal objects of 

 investigation ; they are formed by one of the bands of transition 

 rocks that traverse the peninsula with a N.N.W. trend, and are all 

 remnants of a once widespread formation which Mr. Foote now 

 unites and distinguishes as the Dharwar series, and shows to be 

 unconformable to the gneiss with which it has been intimately 

 associated by complete folding together. In the Sandur hills 

 there occur masses of rich haematite. Mr. Foote made a careful 

 examination of the well-known diamond field at "Wadjra Karur, to 

 which special interest attached on account of mining operations 

 started there by Messrs. Orr and Sons of Madras. But in spite of 

 the occurrence of a peculiar trappean rock, declared to be identical 

 with the famous diamond matrix of Kimberley, no speck of the 

 o-eru was discovered. Mr. Hacket covered a lai'ge area (some 

 3,000 square miles) of new ground in Mewar, in continuation of 

 his previous work to the north. It is entirely composed of the 

 same obscure rocks — the schist limestones and quartzites of the 

 Arvali system in transitional relation with gneiss and granite masses. 

 Mount Abu is a mass of coarse highly felspathic gneiss. 



