158 MR. PARGETER’S ACCOUNT OF BRECCIA AT GIBRALTAR. 
have derived their origin, and to which they could have been trans¬ 
ported by no other force than that of a tremendous deluge, or de¬ 
bacle of water drifting them from a great distance to the place they 
at present occupy ; and in which, like all the other deposits of this 
grand catastrophe, they have remained ever since undisturbed, on the 
very spot on which they were cast at the time of the last great geo¬ 
logical change, by an inundation of water that has affected universally 
the surface of the earth. 
To the above extracts from Major Imrie, I am enabled to add the 
testimony of another gentleman, now resident at Gibraltar, which 
has just been forwarded to me from thence by my friend the Rev. R. 
Curtois. As the information comes in the form of a letter to Mr. 
Curtois from Mr. C. Rargeter, a medical officer at Gibraltar, and who 
proposes himself to publish an account of the bones they find in that 
spot, I will subjoin an extract from it, which is equally corroborative 
of my views with the account I have just transcribed from Major 
Imrie. 
“ The bones,” says he, “ are found imbedded, 1st. in an ochreous 
sandy earth, cemented by calcareous matter, and much indurated, 
together with angular fragments of limestone; or, 2nd. in a mass, 
which may be termed pudding-stone; consisting of pebbles of white 
quartz, and of variously coloured flinty pebbles (of the same nature 
as noticed by Colonel Imrie, as occurring in the pot-holes at the 
summit of the rock) and of limestone; all of them much rounded, 
and varying in size from minute gravel to that of a goose’s egg; ma¬ 
rine shells, but in small number, are sometimes found with the bones 
in this mass, and all the materials are firmly cemented together; or, 
