142 THE ROYAL SOCIETY OF CANADA 
In 1876 Messrs L. W. Bailey and R. W. Ells in their report on the 
Albert Shales* showed the relation of this great formation to the Lower 
Carboniferous limestone; but this limestone in New Brunswick does not 
show the full variety of the marine faunas, though it does contain 
characteristic Tournasian Brachiopoda; this variety is better shown 
in the limestones of the Avon R. in Nova Scotia, where the two great 
divisions of this limestone the Tournasian and the Viséan are found 
as in Belgium, where they rest upon the Upper Devonian strata above 
referred to; we therefore refer all parts of this terrane to the Upper 
Devonian. 
With the chronological index of the marine deposits before us we 
must admit that the true explanation of the enigma of these floras of 
modern Palæozoic aspect in the Acadian deposits, is that they origin- 
ated at an earlier date in the world’s history than has hitherto been 
admitted, and that Acadia presents to us phases of the Paleozoic vege- 
tation usually called ‘‘Culm” or even ‘‘Westphalian” that areolder than 
we have yet known. 
The Perry (or Passamaquoddy) Basin. 
The geology of the Perry basin of Upper Devonian rocks has had 
a close study at the hands of Mr. G. O tis Smith of the United States 
Geological Survey, and its flora has been revised by Mr. David White 
of the same survey; the latter has added to the original exposition 
of its species by Sir W. J. Dawson and has presented some new genera. 
This basin is declared to be of Devonian Age and consists mostly 
of conglomerates and volcanic flows. The basal beds rest on Silurian 
strata and granite to the west and north, but the highest members are 
under the waters of Passamaquoddy Bay. The fossil plants are ia the 
lower strata of the basin, and have been recognized as Devonian since 
Sir Wm. Dawson described them. 
Omitting doubtful species, Thallophytes, and those represented by 
insufficient material, the following Devonian forms are recorded from 
this area. 
Platyphyllum Brownianum Dn. 
Archæopteris Jacksoni Dn. 
A.——Rogersi Dn. 
A.——Hitcheocki (Sphenopteris Dn.). 
Demirepteris incerta (Cyclopteris Dn.). 
6. Sphenopteris (Trichomanites Dn). 
Gt H whe 
*Rep. Prog. Geol. Surv. Canada 1876-7 (1878) p. 351. 
