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examined by Mr. Owen. He has found them to contain bones of 
four species of Palzotherium, and two species of Amplotherium ; 
also a jaw of the Cheropotamus, a fossil genus established by Cu- 
vier; and another jaw closely resembling that of a Musk Deer, which 
Mr. Owen refers to the genus Dicobune, a genus also established by 
Cuvier upon the fossils of the Paris basin. Such discoveries, falling 
in with the conclusions obtained by the researches of previous phi- 
losophers respecting the tertiary period of the earth’s history, and 
supplying what they left imperfect, cannot fail to give us great con- 
fidence in the results of those investigations, and to enhance our ad- 
miration of the sagacity which opened to us this path of discovery. 
Dr. Mitchell gave an account of his attempts to trace the drift 
from the chalk and strata below the chalk, as it exists in the coun- 
ties of Norfolk, Suffolk, Essex, Cambridge, Huntingdon, Bedford, 
Hertford, and Middlesex. This drift I had occasion to notice in my- 
Address last year, in reference to Mr. Clarke’s elaborate geological 
survey of Suffolk; and I then stated that this diluvial deposit is 
known in the neighbourhood of Cambridge by the name of brown 
clay. Dr. Mitchell has shown that this deposit is of greater extent 
than we were before aware. But still to determine with precision 
its principal masses, total extent, and local modifications, would be a 
valuable service to the geology of the eastern part of our island. 
As my order requires me to take the igneous after the sedimentary 
rocks, I must here notice Dr. Fleming’s “Remarks on the Trap 
Rocks of Fife,” which he distinguishes into three epochs ;—those of 
the eastern extremity of the oolites, which are variously associated 
with the old red sandstone ;—those which run from St. Andrew’s to 
Stirling, which were produced after the coal-measures ;—and those 
which occur along the shores of the Forth, which occur in the higher 
coal-measures. 
2. Foreign (South European and Trans-European) Geology.— 
In the survey of the progress of our labours which I offered to your 
notice last year, I stated, that in proceeding beyond the Alps, and I 
might have added the Pyrenees, we no longer find that multiplied se- 
ries of strata, so remarkably continuous and similar, when their iden- 
tity is properly traced, with which we have been familiar in our home 
circuit. Yet the investigations of Mr. Hamilton and Mr. Strickland 
