ECONOMIC MINERALS. 147 



facturc of superior pottery and as a " filler " in cotton cloth and 

 paper making. Reference may be made to " A sketch of the 

 Mineral Resources of the Baroda State " by U. S. Sambhasiva 

 Iyer for further details and for a complete analysis of the kaolin 

 by C. S. Fawcitt of Bangalore, which shows it to be very nearly 

 identical with kaolinite and washed China clay from Cornwall. 

 The Ahmednagar Sandstone is a product that for some time has 

 shown signs of active development. It is present in enormous 

 quantities, easily obtainable, easily worked with the chisel, and it 

 forms a pleasantly tinted and apparently extremely sound free- 

 stone in many of its horizontal runs. It has been reported on very 

 favourably by Bombay architects, and is probably superior for 

 fine work to Porbander stone, with which however in Bombay it 

 could only doubtfully compete for rough stone structures. A 

 large sample of this excellent building material was presented to 

 the Geological Survey, where it is now exposed to view in the col- 

 lection of Indian building stones. I consider the stone an economic 

 asset to the State and one that should be pushed as far as possible 

 in the large towns on the railway. Its selling price in Bombay 

 before the present extension of the railway was Rs. 3-8 per cubic 

 foot, but this has since been reduced, I am informed, to Rs. 1-4 per 

 cubic foot. Kankar for lime making is a very constant accom- 

 paniment to the alluvium in most parts of Idar, especially near 

 its base, as at Berna hill and Malasa, whence it can be easily ex- 

 tracted in good quantity and quality. 



All the above building and other allied materials are available 

 in almost inexhaustible amounts. It would doubtless be worth 

 while for the State to have some special large-scale surveys made 

 of some of these, such as the kaolin and freestone, from the point 

 of view of their richer and more promising beds. Although not 

 of great intrinsic value such materials in the aggregate have a very 

 considerable value. 



Chromite : See Magnesian Rocks. 

 Clays : See Building Material, etc. 

 Dolomite: See Magnesian Rocks. 

 Grindstone and hones : See Abrasives. 



Iron ores : Idar is not rich in ores of iron, nor would they 

 be of much use without coal or other abundant fuel. The massive 

 igneous rocks and crystalline schists exhibit no special develop- 



