230 DOMAIN II. SILICEOUS. 



This is very rare, having been rejected by the an?- 

 cient artists. There are also other diversities. 



Aspect 3. Egyptian kollanjte, or puddingr 

 stone, containing balls of brown jasper, and some- 

 times agates, with angular or round crystals of 

 unctuous quartz, in a brown ferruginous base, also 

 of an unctuous appearance, owing to the abund- 

 ance of that quartz which seems united with iron 

 in forming the cement, from the valley of Suez. 



Aspect 4. The same, without the balls of jas- 

 per or agate, a fragment of the celebrated statue 

 of Memnon, in Upper Egypt. 



Aspect 5. Jasper bricia, intermixed with other 

 stones, from Forez, in France. 

 The same, from Switzerland. 



Aspect 6. Quartz bricia, consisting of frag- 

 ments of that substance joined by the same ce- 

 ment, from Smoland, in Sweden. 



STRUCTURE II. SMALL-GRAINED. 



Sand-stones. In the Mode of Glutenites it would be difficult, 

 as the celebrated Rome de Lisle has long ago 

 remarked, to fix a precise boundary between pud- 

 ding-stones and large-grained sand-stones. 



