138 Houihampton Level. 



694 feet. Coarse, flesh-coloured granite. Tins is the 

 handsomest granite in the whole drift. Here we find the most 

 beautiful specimens of graphic granite, both flesh-coloured and 

 gray. 



680 feet. A stratum of Kirwan's stell-stein. That is, an 

 a^regate of fine-grained quartz and mica, without any felspar. 

 The quartz is mostly greenish, probably coloured by the next 

 stratum. 



670 feet. Beautiful green soapstone. Very compact, but 

 rather softer than that kind in common use for inkstands. 



666 feet. A green, granular aggregate. It seems to be 

 made up of fine fragments of quartz, soapstone, and mica, 

 rarely a little felspar, slightly compacted together. 



Remark. All the strata, from the inner termination of the 

 drift to this place, a distance of one hundred and thirty-four 

 feet, are nearly vertical, or a very little inclined. Here they 

 begin to approach a horizontal position. 



The green aggregate continues as far as the air-well, a dis- 

 tance of && feet, with some trifling variations in the size- and 

 proportions of the aggregated fragments. 



600 feet. A granulated, schistose aggregate, chiefly of 

 quartz and mica. Though the constituents and the form ol 

 the rock correspond very nearly with mica slate, it cannot be 

 considered as the primitive mica slate rock. It is so slightly 

 compacted that it can scarcely be kept from falling to pieces. 

 Its position is nearly horizontal. 



480 feet. A stratum of coal, half an inch thick. This 

 stratum may be traced, at different intervals, one hundred and 

 eighty feet along the drift towards its mouth. It lies between 

 the strata of the last described schistose aggregate. 



400 feet. An aggregate appears, alternating with the loose 

 schistose rock, which resembles the red sandstone, but is of 

 a less firm texture. 



From this place ajl the strata, east of the soapstone, occa- 

 aionally appear, for the distance of about three hundred feet. 

 This is probably on account of their undulatory forms and 

 horizontal position. Most of the way we find the lower part 



