146 



CHAP. IX. 



ON THE TEXTURE, FRACTURE, AND OTHER RE- 

 MAINING GENERAL CHARACTERS OF ROCKS. 



TEXTURE. 



IT has been attempted to distinguish between the 

 structure and the textee of a rock, by arranging 

 under the former term those modifications in 

 which the component parts are either more or 

 less distinctly separated, or are thus separable 

 under peculiar circumstances. In the modifi- 

 cations arranged under the head of texture, it 

 must, on the contrary, be conceived, that the mass 

 is continuous, but that it is so constituted as to 

 present analogous appearances to the former ; these 

 being generally, however, on a smaller scale, and 

 consisting of parts that cannot be separated. The 

 texture is thus an indication of an imperfected 

 and minute structure. As it is scarcely dis* 



