CHLORITE SCHIST. 285 



arid the laminar structure too little continuous, to 

 admit of this application to use. 



Where the beds are thicker, and approximate 

 more in character to micaceous schist, it is also 

 frequently, like that rock, very imperfectly, or at 

 least irregularly fissile ; and, in the same manner, 

 it presents similar contortions and undulations. 

 Even in the most perfectly laminar varieties of 

 this rock, minute undulations are very frequent ; 

 and as the lustre of the parallel fracture is often 

 so considerable as to approach to the metallic, 

 such specimens are exceedingly beautiful and 

 often highly splendent, even in larger bodies. 



In the minuter circumstances of texture, chlo- 

 rite schist partakes, not only of the characters of 

 micaceous schist already described, but, under 

 its other modifications, of those of gneiss also ; 

 and, although more rarely, even of those of argil- 

 laceous schist. It is unnecessary to detail these 

 circumstances where they resemble those which 

 occur in micaceous schist, as it would be merely 

 to repeat what has already been said on that sub- 

 ject. It need only be observed, that the same 

 double character of a chemical and a mechanical 



