422 Proceedings of the Asiatic Society. [No. 5. 



the last few months thrown upon the structure of immense areas, 

 which will in reality affect the whole system of colouring adopted 

 on the map under consideration. But the details of such researches 

 are not as yet sufficiently extended to enable them to be made use 

 of for the purposes of a general map. 



Tour Committee are the more deeply impressed with the inexpe- 

 diency of any present attempt at the issue of a new edition (as the 

 Court of Directors would appear to contemplate) of this map, by 

 the fact that any corrections now made cannot have the benefit of 

 the knowledge and research of the original compiler. Geology had 

 to mourn the loss of Mr. Greenough even before the actual publi- 

 cation of this map. And while your Committee is persuaded that 

 some of the errors they have alluded to, would never have escaped 

 his careful revision, they think it would be scarcely possible for any 

 other person now to take full advantage of such corrections as 

 might be noted. If a new map be desired they conceive that a 

 competent geologist should be requested to devote his energies to 

 it for the ensuing two or three years, so that a map, brought up 

 fully to the most recent state of knowledge on the subject, might 

 then be published, while the present map would ever remain a 

 monument of Mr. Greenough' s zeal and labour. 



Tour Committee cannot avoid expressing their entire concur- 

 rence with the views of the Court of Directors in thinking, that 

 such maps " may be made the means of procuring further, and more 

 correct information" on the geology of the country, but they feel 

 satisfied that this must be brought together by some one acquainted 

 with Indian geology as well as European ; and must shew a less 

 exclusive adherence to European types and European nomenclature. 

 All which they would submit as their report on the questions 

 referred to them. 



Thomas Oldham. 



C. B. Toung, Captain Engineers. 



H. L. Thuillier, Major. 



E. G. Spilsbury, M. D. 



A. Grote. 



H. Piddington, Curator Museum Eco 

 July 1st, 185G. nomic Geology. 





