278 GEOLOGICAL SURVEY OF INDIA. 



The investigation and working of tin in Tenasserim continued 

 in the hands of Mr. Hughes, and towards the end of the year a 

 professional staff of Europeans and Chinese miners were obtained 

 from the Straits Settlements. The conditions of tin mining in the 

 Mergui district are fully set forth in Mr. Hughes's paper in the 

 " Records " for August 1889. 



In Upper Burma much was done by Dr. Noetling in the 

 rather rapid explorations which he had to make in regions known 

 for coal, oil, iron, and precious stones ; while so engaged he was 

 also employed in framing suggestions for the Government for a 

 code of mineral concessions and leases. His most important works 

 were reports on the Yenan-gyung oil fields and Chindwin coal field. 



In July 1889 Mr. Griesbach returned to India after his tour of 

 deputation to the Amir of Afghanistan. During his journey in the 

 previous year up the Logar valley to the Khurd Kabul valley, 

 Upper Wardak, Cherkh, Kharwar, Zanakhan, Ghazni, &c, the most 

 interesting geological Avork Avas the recognition of at least three 

 horizons, the rhoetic with lithodendron (in Kharwar), the upper 

 Jurassic (or possibly neocomian) plant beds near the Shutargardan, 

 and finally, well-developed nummulitics in Kharwar and Shilghar. 

 He examined the copper lodes of the Logar and Khurd Kabul areas, 

 the magnesite of the Logar and entrance to the Tangi Wardak, the 

 graphite of Cherkh, the iron and lead ores of Kharwar, and the 

 argentiferous lead ore of Zanakhan near Ghazni. It turns out also 

 that the entire Surkhab valley from near Doab-i-Mekhyari to near 

 Dahana Iskar is practically one big coal field with numerous thick 

 seams of good coal of triassic and rkastic age. 



Dr. Waagen's further contribution on the Salt range fossils in 

 Part I., Vol. IV. (Geological Results), was issued at the close of 

 the year. Several important modifications in the classifications 

 originally adopted have become necessary, owing to very interesting 

 discussions of fossils by Dr. Warth, the last and most remarkable 

 of these discoveries, that of trilobites, having been announced by 

 Dr. King, in the Records for 1889, p. 153. 



During 1890 Mr. Foote, the only officer of the Survey left to 

 carry on the work in Southern India, completed the examination 

 of the southern half of the Bellary district, in quest of the auriferous 

 condition of the Dharwar series. The auriferous indications were, 

 however, not worthy of particular notice, though considerable 

 additions were made to the existing knowledge of the occurrences 



