INDO-GANGETIC TRACT OF MOUNTAINS. 219 



extensive series of beds included in clay-slate which, as I have before ob- 

 served, may be either transition or primary, according to the observer's 

 views. Fragments of the clay-slate, as well as of the lime-stone, occur in 

 the gypsum ; the former rock is distinctly stratified, and dips east with an 

 inclination varying from 30° to 50°; the lime-stone is not so generally stra- 

 tified, or at least the stratification is often very obscure. 



6. The gypsum is of the prismatoidal species of Professor Moh's, of 

 the variety called foliated granular ; it is of a snow-white color, the lustre 

 is equal, or perhaps a little superior to that of white marble^ — -It is scarce- 

 ly translucent', or if so, only in a low degree. One small specimen which I 

 saw was perfectly so, and had all the appearance of the most beautiful 

 alabaster. The specific gravity I find to be 2.24, which is within the 

 limits determined by Professor Moh ; the hardness is about 2.0. In strict- 

 ness, however, the hardness of a mineral cannot be determined from spe- 

 cimens in which the individuals are so small, at least not in the deter- 

 minate manner required in the scientific system. 



7. A second deposit had been discovered, about two miles up the bed 

 of a stream which falls in opposite to Sansar Dhdrd, by a gentleman who 

 had visited the spot, and mentioned the occurrence to me. I was not suc- 

 cessful, however, in my attempts to find it, although I met with a sufficient 

 number of fragments to indicate the neighbourhood of some larger 

 mass. The description given, with an examination of the specimens, 

 enable me to decide that it was a small bed, or mass, in clay-slate. Some 

 of the specimens had the slate adhering ; it appeared evidently to have 

 been formed by infiltration, or deposition from water, subsequently to the 

 clay-slate, as the bed which, in its greatest extent, was nearly horizontal, 

 had taken a downward direction, so as to fill up a perpendicular crevice 

 in the slate. The gypsum exactly resembled that of the preceding locality. 



Though 



