176 GEOLOGICAL EEMAKKS. Book I. 
ties for architectural purposes. As to the geology of the 
territory in general, there seems to be some analogy with 
that of Western Texas. According to the descriptions 
which were given to me during my conversations with a 
gentleman who had visited the interior, the higher moun- 
tains at the sources of the Belize River and Sherboon are 
composed of a centre of plutonic rocks, flanked by strata 
of black slates, and layers of sandstone with gypsum are 
resting upon the latter. These strata, which form the 
pine ridges of the territory, may belong to the new red 
sandstone, while the limestone ridges, with the caves and 
tunnels, may be of the Jurassic formation. 
