2 M1DDLEM1SS: THE GfiOLOGI OF rf)AB STATE. 



E.S.E. along the edge of the alluvium, as shown on the Bombay 

 Survey sheet 120, comprises only a rim of colour surrounding the 

 Recent alluvium. This was interpreted by Kishen Singh as 

 Vindhyan at Ahmednagar (with a few very small patches of 

 Nummulitic limestone in the Sabarmati river at Dedhrota) together 

 with Archaean gneisses and " Transition " rocks. 



I do not know of any published accounts by either of these 

 observers specially referring to the Idar State. 



Outside the department, a geological reconnaisance of part 



of the State was made in 1902 by Mr. Hastings 



M. Page, then Professor at Poona College. 



No mapping was attempted during this short trip, but Mr. Page 



collected a number of specimens, a set of which were determined 



later by Mr. Vredenburg in the Geological Survey office. I am 



indebted to Mr. Page for an abstract of his field-notes, which have 



been of considerable use to me in my preliminary traverses. 



The western edge of the boundary along the Sabarmati has been 



briefly referred to in Mr. K. Bruce Foote's 



" Geology of Baroda," and, following him, by 



Mr. Sambasiva Iyer in his paper on the " Mineral Resources of 



Baroda State." 



My own survey of this State began in January 1911, and was 



continued at irregular intervals during 



My own survey. . , ,, , -, ., r i r>i -» -,^-, n 



portions of the cold- weathers of 1912, 1913 



and 1916 as opportunity offered amid other duties. It was origin- 

 ally undertaken, partly in consequence of particular obligations 

 entered into by the Department some years before with His Highness 

 Maharajah Major-General Sir Pratap Singh, Bahadur, G.C.S.I., 

 K.C.B., LL.D., and partly as coming ultimately within the pro- 

 gramme of the extension into more western districts of the Central 

 India and Rajputana survey party operations, now nearing com- 

 pletion. 



It is a pleasant duty to acknowledge the kind assistance of the 

 Durbar in facilitating my work and the personal interest taken 

 in it by His Highness, Sir Pratap Singh, and later by the present 

 Maharajah, Sir Dowlat Singh, K.C.S.I., and other State officials. 



The geological description here given depicts, sufficiently con- 

 ciselv, an area that is very typical of this 



Geological features. . T .. .. .. 



part oi India ; and, taken in connection 

 with that of other parts of Rajputana recently under description 



