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are preserved in the beautiful atomies that make up the mass 
of the extensive “Infusorial” strata, found in various parts 
of the world. 
In conclusion, I have to state that the Chincha Islands 
have been visited by a competent geologist, Mr. Kinahan, of 
Dublin, and he has pointed out that they have been upheaved 
by volcanic action within a recent period, geologically con- 
sidered, and that I have found a remarkable confirmation of 
my theory, in a paper read before the American Institute 
some years since by Mr. Alanson Nash, detailing the observa- 
tions of a Mr. F. Nash, made during a residence on the 
Chincha islands, while engaged in the Guano trade, for nearly 
six months. Therein we find it stated, that Mr. Nash was of 
opinion that Guano was formed in the way I have described ; 
that the anchors of vessels in that locality bring up Guano 
from the bottom of the ocean; that ‘the Guano is (much of 
it) not composed of bird dung, but it is composed of the mud 
of the ocean.” That ‘the composition taken from the islands 
called Guano, is stratified and les in the same form it did 
before it was lifted up from the ocean; that “the bottom of 
the ocean on the west coast of Peru, contains vast deposits of 
Guano. An island, during an earthquake, rose up in the bay 
of Callao some years since from the sea, containing Guano 
four feet deep, the formation the same as the Chincha islands.” 
In conclusion he says, ‘the day will come when the Guano 
at these islands, will be dredged up with boats like mud from 
our rivers and harbors.” And in this expectation I fully 
coincide with Mr. Nash. Need I again point to the interest 
connected with, and the value of further knowledge of this 
subject, or call on everyone for the contribution of facts, to 
aid in its thorough elucidation? 
