ex Report of the Mineralogkal Survey [No. 126*. 



schist, which might be called a greywacke. On the summit of the 

 Pass, there is no rock in situ, and fragments of micaceous schist are 

 to be seen. Thence to the village of Sama, we are accompanied by 

 ordinary blue limestone distinctly stratified, and of a sublaminar or 

 slaty structure, which is not, however, developed without weathering. 



24 1 . From Sama to Buret, the same rock prevails, frequently remark- 

 able for the white vein by which it is traversed. Sometimes the two 

 colours, form alternate layers, the rock having thus a striped appearance. 

 It is occasionally very argillaceous, and passes into a shattery thin 

 laminar rock, very like that described in Art. 226, the only dif- 

 ference being a black or blue colour, instead of red, green, or purple. 

 In this state, it no longer effervesces with acids. In the bed of the 

 stream leading down from Sama, the fragments are either blue lime- 

 stone or crystalline dolomite, or of clay slate a very few; but at the 

 bifurcation below Mawgaon, immense blocks of gneiss, similar to those 

 observed below Girgaon, are to be seen. Their source is evidently 

 in the glen, which here joins the Suma glen, and they shew the proxi- 

 mity of the boundary of the gneiss district. 



242. From Buret to Kubkot on the Surjoo, limestone still accom- 

 panies, as passing down the Ramgunga to its confluence with the 

 Surjoo, and then down the latter river. It appears to be stratified 

 distinctly on the large scale, the strata being always best marked where 

 the rock is most impure. They appear sometimes to be vertical, and 

 the direction, as far as it could be ascertained, is S. 20° E. Sometimes 

 it contains talc in notable quantity, and then the rock is highly fissile. 

 The rounded fragments in the bed of the river are numerous, and many 

 of these are white crystalline dolomite, (macrotypous lime haloide.) 

 Near Kubkot, the dip was observed to be Southerly, so that there must 

 be evidently some great irregularity here. The sameness of the lime- 

 stone features continues to Gryket, also in the bed of the river, the sur- 

 rounding ridges bearing testimony by their appearance to their identity 

 with the lower strata, occasional patches of argillaceous schist then 

 diversify it, although it is still the prevailing rock. The fragments 

 in the river bed consist of limestone and quartz rock. A small patch 

 of black argillaceous schist is found a few miles above Bagesur, the 

 place being further remarkable for the deep bed the river has worn 

 in the limestone, hollowing it out into caverns and deep holes, in some of 



