DOMAIN VII. COMPOSITE. 



ranged granite, gneiss, porphyry, amygda- 

 lite, bricia, and sand-stone ; and the reader 

 will be surprised to find what various and 

 discordant objects are united under these 

 vague appellations. Mr. Kirwan has, in 

 like manner, two titles of Aggregated and 

 Derivative Stones; the other rocks being 

 considered under the simple substances. 



Daubuisson supplied Brochant with a 

 short account of rocks upon the plan of 

 the Wernerian geology, or, as it is called, 

 geognosy, not by the most fortunate term, 

 for the Gnostics have been celebrated for 

 sixteen centuries as only pretenders to 

 knowledge. But Werner is, on the con- 

 trary, the most able and sagacious observer 

 that the science has ever produced ; and 

 his observations will continue valuable to 

 the latest posterity. His reputation can- 

 not be injured even by the insolent tone of 

 his disciples, who seem to say, " Are we 

 not sons of the wise, and shall not know- 

 ledge die with us ?" Daubuisson has how- 

 ever treated this subject with great modesty 

 and accuracy. The fault in the plan is. 



