[MATTHEW | CLIMATIC ZONES IN DEVONIAN TIME 143 
7. Barinophyton Richardsoni (Lepidostrobus Dn.). 
8. Leptophleum rhombicum Dn. 
9. Cordaites (?) flexuosus Dn. 
Of the above species the first is found also in the Upper Devonian 
of New York and the Baie Chaleur, Archæopteris (2-4) has representa- 
tive forms in the Catskill and Chumung of New York and Pennsylvania 
and is found also in the Gaspé peninsula; the third species A. Hitchcocki, 
(No. 4) is probably a fruiting stem of this genus, or an allied one. De- 
mirepteris is a similar but more fragmentary form, comparable to Dr. 
Nathorst’s Sphenopteridium Keilhaui of Bear island. The plant remains 
referred to Psilophyton do not readily recall the stems of that genus, 
and no fruiting organs are shown; those referred to P. alcicornis are 
not unlike the fertile branches of such ferns as Aneimites in the down- 
ward-bent process, at the base of the main branch; a species of Psilo- 
phyton from the Lower Devonian of Nictau N.S. also has this character- 
istic. Leptophleum rhombicum is apparently the only representative 
of the Lepidodendra in this flora, although plants of this family are 
plentiful in a basin of Upper Devonian strata soon to be described. 
Origin and nature of the sediments. Of the upper sandstone member 
of the Perry group Mr. Geo. Otis Smith says—‘‘Some of sandstone is 
stream bedded, and in such rock it is noticeable that the flow of the 
currents depositing the sand is shown always to have been from the 
north west.” Of the lower conglomerate Mr. Smith says “it occupies 
the greater part of the area (of the Perry formation) described; and 
that the conglomerate exhibits its derivation from the red granite of 
the vicinity, boulders of that rock predominate, and the matrix is of 
an arkose character.” The features indicate that high lands existed 
to the west and north of the Perry basin and were the source of the 
sands amid which the Devonian plants were deposited. 
In general it may be stated that the rocks of the Perry Basin are 
only gently inclined 15° to 20° being the maximum dip. . . . The 
Perry rocks are really the western part of the basin of which they form 
apart. Other ledges are found on the New Brunswick shores, but the 
central portion is beneath the waters of Passamaquoddy Bay. It seems 
probable however, that the greater part of the formation is represented 
in the western part of the Basin. 
This flora of Perry is of peculiar interest because it appears to 
furnish an instance where heavy denudation in Upper Devonian Time 
has occurred consequently to the intrusion of granite rocks in Middle 
Devonian Time. This latter period was marked by the appearance 
of the latest granitic rocks in this region, or by their appearance at the 
earth’s surface, when they furnished an abundance of fragments to the 
