,O06.7/3 
THE CANADIAN JOURNAL. 
NEW SERIES. 
No. XLV.—MAY, 18653. 
A POPULAR EXPOSITION OF THE MINERALS AND 
GEOLOGY OF CANADA. 
BY E. J. CHAPMAN, Pb. D. 
- PROFESSOR OF MINERALOGY AND GEOLOGY IN UNIVERSITY COLLEGE, TORONTO. 
PART V. 
(Continued from page 127.) 
PALEHOZOIC ROCKS OF CANADA. 
The formations of Paleozoic age, recognized in Canada, comprise, 
in ascending order: (1) A complete series of deposits belonging 
to the Silurian Epoch ; (2) A succeeding series, referrible to the 
earlier part of the Devonian Epoch ; and (3) A partial development 
of Carboniferous strata—these latter, however, being only found 
in Gaspé, at the extreme east of the Province. 
Sinteian Srrata:—The Silurian strata are usually subdivided 
into two series—the Lower and the Upper Silurians, respectively ; 
but in Canada, the officers of the Geological Survey have recently 
adopted a third or additional group—the Middle Silurians. This 
latter group includes the lower portion of the Upper Silurian series 
as originally constituted.* 
* The term “Upper Silurian.” it should be observed, is employed in the preceding Parts 
of this Essay in its original signification ; 7.¢., as including the so-called “ Middle Silurians ” 
of the later system of division. 
Vou. VIII. P 
