nu 
Ung 
Essay, Ca. 245 
Ofthe frazments composing this stratum some 
were nodular, consisting of various concentiic 
layers; some were tebular; others. seperated 
readily into parallelopipeds, trapezimus or py- 
ramids: in many casses large irregular masses 
were agglutinated without any shape. A simi- 
lar deposition from water is one of the most 
common consituent parts of many of the. sepa- 
rate hills composing the grand central ranges: 
those observed on this route will be pointed. our 
in their proper places, with reference to the ex- 
planatory specimens. The fracture was yel- 
lowish, and exhibited clay in which minute par- 
ticles:of quartz, schorl, &c. were bedded. 
Inascending the second longitudinal range of 
this peninsula, I observed a deep yellowish soil 
from which large framents of Basaltes project- 
ed; the hill is steep, and several hundred feet 
$ above the level of the Ocean. At the Southern 
extremity is one ofthe principal Caverns inhabit- 
ed by the esculent swallow, denominated by the 
natives Guwo- Dahar. The descent to the shore 
almost perpendicular, is 72 fathoms: the stones 
which were brought up to me consisted of round- 
ed fiagment of Basaltes,* arising from the de- 
composition of the Poudingues ; these had been 
collected at the entrance of the cave. The frag- 
. ments of Basaltes on the summit, in this place, 
decomposition, and covered with a yellow friable 
earth. Some of the smaller fragments were no- 
dular, and consisted of concentric layers. Ac- 
cording to the account of the persons employed 
in collecting the nests, the Cavern extends with 
: Exp. Cat. No. 2. mo ag 
