42 Progress of the Boring for Coal at Jamutra in Cutch. [Jan. 



No. feet, inches. 



21 Sandstone composed of very coarse grains of quartz, &c. and color- 



ed deep red by oxide of iron, 1 2 



22 Fine argillaceous sandstone and slate-clay, 2 



23 Very coarse quartzy sandstone or breccia, deep red, 9 



24 Ditto ditto white ditto, 3 7 



25 Very argillaceous sandstone, 1 1 



26 Very coarse light-brown sandstone, 1 4 



27 Brown sandstone, fine 4 0§ 



28 Coarse quartzy sandstone, 2 10 



29 Very hard red sandstone, 1 1 



30 Sandstone and slate-clay, 1 8i 



31 Red ferruginous sandstone, exceedingly hard, 2 



32 Very coarse quartzy sandstone, 7 



33 Argillaceous sandstone, 1 5 



34 Clay iron stone, excessively hard, 1 7 



35 Deep red sandstone, 5 9 



36 Very argillaceous sandstone, strongly impregnated with iron,.. ..9 10 



37 Excessively hard rock, consisting of particles of quartzy-clay slate 



and strongly cemented in ferruginous clay 2 



38 Reddish argillaceous sandstone, 9 3f 



39 Very coarse quartzy breccia or sandstone, 3 84 



40 Very fine grained sandstone, 1 4^ 



41 Very coarse quartzy ditto, 1 10 



42 Red sandstone, 4 8 



43 Hard red clay, 8 



44 Hard brown sandstone, 2 5 



45 Blue clay or slate clay, 6 



46 Grey or pyritous iron ore, exceedingly hard, 1 6 



47 Slate clay, 1 3£ 



48 Pyriteous iron ore, exceedingly hard, 2 3 



49 Blue slate clay, with pieces of iron pyrites, 14 



50 Hard red iron stone, very difficult to cut through, 1 3 



51 Slate clay 4 



52 White sandstone, composed of extremely fine particles of quartz, 15 



53 (A few small pieces of coal were now brought up) : perfectly white 



sandstone, composed of extremely fine particles of quartz, .... 7 



54 Total depth of bore at present reached, including 42 ft.l in. in the 



height of the bank of the river 190 1£ 



N. B. Below the white sandstone is a very hard rock, at which we are 

 now working, and which serves as the pavement of the water channel 

 described in the letter. 



