~ Memoranda. 187 
“The domestic animals here, are the cow, ox, sheep, goat, 
however, frequent the jungle, principally, and seldom dis- 
turb the inhabitants.” 
Me ae extracted from a Letter to the wee dated 
Alicante, (Spain,) March 6, 1824, from Witutam Ma- 
ite, dese) President of the American Géologital So- 
ciety, &c. &e. 
11. Difficulty of Mineralogical Excursions in Spatn.— 
“T have been much disappointed by being prevented from 
executing my mineralogical excursions in Spain, by the 
bands of powerful robbers, that have long infested the as- 
tonishingly extended surface of uncultivated and uninhab- 
ited wilds, in this naturally delightful country ; not that I 
require any money worth the robbing, to supply me with 
all that I need—for the regimen which I adopt, for the 
promotion of my health, in my excursions, demands noth- 
ing but water, and a very small quantity of the most com- 
mon food.; but these barbarians have adopted the Algerine 
system, of taking you, as a slave, to the aap when 
they exact, as a ransom, as many thousands of dollars, as 
P ae he conceive the __ you possess will enable you to 
pay.” 
epitals of est poke called 24 Werner, Sie 
stein. This lava crops out from under an old secondary 
compact limestone, containing shells ; and probably arose 
from a submarine volcano, or was afterwards covered by 
the sea, to a considerable depth, and for so long a time, as 
to alloy. limestone mountains, full of shells, to be formed 
over it,’ 
3. Opi nions as to the Principal Rock Formations.—“As 
bs result of all that | have seen, | am contirmed in the 
es that the Neptunian and Volcanic formations, of 
e four classes, that cover the primitive, have been pro- 
