294 Dr. Mac Culloch on the 
the coral reefs in the vicinity are shaken. In the north Pacific 
also, coral is found in Owhyhee, inland and above the sea; and 
in this island, Mouna Roa, and probably all the rest of this lofty 
mountainous group, are formed of volcanic rocks. 
These facts complete the chain of evidence in a manner that 
must satisfy every reasoning mind as to the causes which haye 
raised, even the lowest of the elevated islands, above the level 
of the ocean. It is unnecessary to enlarge on a question so 
obvious. But the elevation of volcanic islands in other seas, 
mentioned at the commencement of this paper, serves to illus- 
trate and confirm these reasonings. Those phenomena which 
have been detailed in the first division of this article, confirm 
also, as they receive illustration from that which has now been 
described. In the same way the changes in the level of the 
land adjoining to many well known terrestrial volcanoes, which 
have been accompanied by the tremendous phenomena of earth- 
quakes, would also serve to establish the truth of this explana- 
tion, could any further confirmation of a conclusion so obvious 
be required. 
In terminating these remarks on the coral islands, it will not 
be uninteresting to observe, that analogous appearances occur 
in the volcanic islands of the African coast. Secondary lime- 
stones are found lying upon those rocks, which are the produce 
of fire, containing marine remains, yet elevated above the sur- 
face of the ocean. If the elevation of these strata, abstractedly 
considered, should be thought to prove nothing more than what 
may be inferred from the analogous appearances that are to be 
seen all over the world, it must be recollected, that there is 
here present, not only an obvious and active cause, sufficient 
to raise them from the bottom of the sea, but that the actual 
agency of that power in analogous cases, is proved by the 
phenomena of the islands now described. As far as it is a 
question of relative antiquity alone, there may be differences in 
the results, or in the present appearances ; but the strength of 
the general argument derived from them remains undiminished. 
As it is not here my object to extend these inferences to the 
general derangements and elevations of the strata of the globe, 
I shall leave the preceding facts to make that impression which 
