INTRODUCTORY. 17 



south to forces no longer existing, but resembling those by which the 

 Falls of Niagara were excavated. 



The different groups with their thicknesses are represented in a list 

 (extracted below*), and tolerably full descriptive observations upon each 

 group follow, an extract from a former report being given regarding the 

 Baghanwalla coal, and a section to explain the position of the petroleum 

 springs at Jabbi.f The suddenness with which fossils appear in the lower 

 (or Froductus) limestone group is adverted to, none being found below. 

 The Korana hills referred to by Dr. Fleming are also noticed,^ and the 

 rock of the Kheura gorge, &c., alluded to by the latter as of "somewhat 

 trappean aspect,""' is declared to be an actual trap. Appended to the 

 paper is a list of tertiary Mammalian and other fossil remains identified 



* Mr. Theobald's list is given in inverted order, but here restored, for sake of uniformity, 

 to the natural one. 



10. Nummulitic limestone, conglomerate, green, red, and yellow Feet. 



ossiferous sands, marls and conglomerates, minimum ... 10,000 



9. Upper or nummulitic limestone ... ... ... 1,100 



8. Carbonaceous shales, sandstone, and lignite ... ... 80 



7. Red and green, white spotted shales and sandstones . . . 600 



6. Lower (or ProcZwe^Ms) limestone ... ... ... 1,100 



5. Hard fawn-coloured sandstone with bands of conglomerate .. . 700 

 4, Cupriferous purple shale, and red friable grits and con- 

 glomerates ... ... ... ... 400 



3. Dark arenaceous shales with green earth ... ... 250 



2. Dark-red sandstone, fine grained with black iron sand 



partings... ... ... ... ... 700 



1. Red marl and gypsum with rock-salt ... ... 1,500 



Total ... 16,430 



t Jaba on the Government maps. 



X As formed of a species of slate ■ with feebly developed slaty structure and deep ripjile 

 marks, gray, stained red and yellowish, and weathered to a dark burnished brown, with 

 intensely ferruginous burnt aspect, white quartz veins, much peroxide of iron, and a curious 

 carbonate of lime and iron (Jour. As. Soc, Beng., Vol. XXII, p. 208), having 65'14 per cent, 

 of carb. lime, which formed half a one-foot quartz vein. — Jour. As. Soc, Beng., Vol. XXIII, 

 p. 674. 



c ■ ( 17 ) 



