1865.] Notes on the Sandstone formation, &c. 107 



The specimens bad just the resemblance of drift wood imbedded in the 

 sandstone. The dip was at a very high angle to the north, so that the 

 beds were passed in succession going up the ravine, and had there been 

 any thick seams, they must have been seen. Three hundred yards up 

 the bed of the nulla, the softer sandstone was succeeded by one much 

 harder, of a light colour and coarse texture. The lignite was found in 

 this also, and the longest and thickest string yet seen was at this point. 

 Yet, from the appearances of it and from so little lying in the water- 

 courses, I did not think anything approaching to a seam was likely to 

 be found ; and, not having time to spare, I did not follow the ravine 

 any higher. An inspection of the ravines to the east or west might 

 bring to light larger masses of this lignite. The clip at this furthest 

 point was N. E. by N. 70°. In the cliffs on the west, a very good section 

 was obtained, and the highest beds, that appear upon the surface to be 

 an unstratified talus, I now saw were horizontally bedded and resting 

 quite unconformably on the sandstones below. These horizontal beds, 

 of which about 150 feet was exposed, are composed of sandy clay and 

 semi-angular gravel, with scattered large, partly water-worn masses of 

 rock, some of large size. I append a section (Plate IV.) to illustrate the 

 Buxa formations, which, I trust, will make my description plainer. I did 

 not succeed in finding any fossils : — a longer search would perhaps have 

 ended successfully, — so that it is impossible to say in what formation 

 this isolated mass of sandstone will find a place.* The plateau of the 

 Buxa position is probably the highest level of the horizontally strati- 

 fied gravels. I believe some specimens of the lignite have already 

 been forwarded to the Superintendent of the Geological Survey. 

 Some specimens in which the woody texture is well displayed shall 

 be sent by first opportunity. 



* See a remark on this bead in the Proc. As. Soc. for May, 18G5, p. 91. 



