874 DEPABTUBE FEOM Ilia UE ROTE. 
very broad and sometimes sin nous.* They contain large 
nodules of reddish feldspar and but little quartz. The mica 
is found in superposed lamella', not isolated. The strata 
nearest the bay were in tho direction of 00° N.E., and dipped 
80° to N. W. Those relations of direction and of dip are the 
same at the great mountain of the Silla, near Caracas, and to- 
the east of Maniquarez, in the isthmus of Araya. They 
seem to prove that the primitive chain of that isthmus, after 
having been ruptured or swallowed up by the sea along a 
space of thirty-five leagues, t appears anew in Cape Codera, 
and continues westward as a chain of the coast. 
I was assured that, in the interior of the earth, south of 
Higuerofe, limestone formations are found. The gneiss did 
not act upon the magnetic needle; yet along the coast, 
which forms a cove near Cape Codera, and which is covered 
with a fine forest, I saw magnetic sand mixed with spangles 
of mica, deposited by the sea. This phenomenon occurs 
again near the port of La Guayra. Possibly it may denote 
the existence of some strata of hornblende-schist covered 
by the waters, in which schist the sand is disseminated. 
Cape Codera forms on the north an immense spherical 
segment. A shallow which stretches along its foot is known 
to navigators by the name of the points of Tutumo and of 
San Francisco. 
The road by land from Higuerote to Caracas, runs through 
a wild and humid tract of country, by the Montana of 
Capaya, north of Caucagua, and the valley of ltio Guatira 
and Guarenas. Some of our fellow-travellers determined on 
taking this road, and M. Bonpland also preferred it, notwith- 
standing the continual rains and the overflowing of the 
rivers. It afforded him the opportunity of making a rich 
collection of now phmts.J For my part, I continued alone 
with the Guaiqueria pilot the voyage by sea ; for I thought 
it hazardous to lose sight of the instruments which we were 
to make use of on the banks of the Orinoco. 
We set sail at night-fall. The wind was unfavourable, and 
we doubled Cape Codera with difficulty. The surges were 
* Dickflasriger gneiss. 
f Between the meridians of Maniquarez and B guerote. 
£ Bauhinia ferruginea, Brownea raceroosa, B ^d. Inga hymenaeifolia 
I. curiepensis (which Willdenouw has called by n istake 1. caripeusis), 3cc* 
