116 ROYAL SOCIETY OF CANADA 
by the last-named author in his Acadian Geology, while not stating the 
thickness of the Upper Coal Formation, gives for the 
Middle ‘Coal Formations +2 4, ONG es eae 
Millstone Grit Formation. 02) eS aoe 
Lower Coal Formation, upper part.. .. .. .. .. 1658 “ 
Lower Coal Formation, limestone .. .. . ? % 
There are thus 10,000 feet in the Ministre. Ge and Productive 
Coal Measures, without regarding the Upper Coal Formation, whose 
thickness is not stated. 
This terrane of the Coal Measures has been traced by Drs. Bailey 
and Ells through Southern New Brunswick to within thirty miles of 
the Little River terrane at St. John, and is quite different from the 
latter in lithological aspect, degree of consolidation, contained flora, and 
relation to the adjoining terranes. Its flora may be seen to be of true 
Carboniferous type by reference to page 242 of the Acadian Geology. 
As to its relation to the underlying terranes, according to Drs. 
Bailey and Ells it is unconformable to the Lower Carboniferous, which 
includes the marine Lower Carboniferous Limestone. That this lime- 
stone is truly Lower Carboniferous seems clear from the contained 
brachiopods, and from the presence of the trilobite Phillipsia. For 
according to Dr. Henry Woodward, though search has been made in the 
past 100 years in the English Carboniferous strata, no trilobite has been 
found in later beds than the Carboniferous limestone. We therefore 
see no reason for thinking that the Carboniferous limestone of the 
Acadian provinces and Newfoundland is of a different age from that 
of Great Britain. 
But beside the limestone and conglomerate series which thus under- 
lies unconformably the millstone grit, there is yet another terrane 
referred to the Carboniferous which unconformably underlies both of 
these, and which suffered considerable denudation before the Lower 
Carboniferous limestone, red conglomerate and shale were deposited 
upon it. This is the Albert shale and its associated conglomerate. 
In the above terranes underlying the millstone grit there is no trace 
of regional metamorphism due to heat conducted from the earth’s 
interior. The dark shales of the Albert series are highly bituminous, 
the plant remains are carbonized only, the shales do not have slaty cleav- 
age and the sandstones are not strongly cemented by siliceous coatings 
to the grains of sand of which they are composed. The fossils are not 
distorted by dynamical movements in the inclosing beds, and the strata 
usually lie at low inclinations. 
When we seek and find the next terrane below, all these conditions 
are changed. This terrane is the Mispec Group having a breccia con- 

