130 THE ROYAL SOCIETY OF CANADA 
the Lepidodendra and Psilophyta on the one hand, and Archæopteris 
on the other, appear to represent the principal vegetation of middle 
and late Devonian of New York and Pennsylvania, and there seems 
no trace of deltaic forms. 
The Devonian of Gaspé and Restigouche. 
These two districts are, the one at the mouth, the other at the 
head of the Bay Chaleur, an arm of the Gulf of St. Lawrence. The 
Devonian land flora of this region was studied by Sir. J. W. Dawson 
in 1859 and subsequently, and the result contributed to the Geological 
Society of London, and later in a memoir to the Canadian Geological 
Survey.* 
The excellent exposures around Gaspé Bay enabled Sir William 
to trace the flora from its appearance at the summit of the Silurian 
limestones of that district through the overlying Devonian sandstones 
to their upper beds, and to supplement this knowledge by further 
studies of the higher part of the Devonian system at the head of the 
Bay Chaleue and mouth of the Restigouche river. The following 
table will show in brief the result of his studies, and the horizons at 
which the several species were found. 
Lower | Middle | Upper 
Gaspé and Restigouche. Devonian 
Bepidodendron Gaspianum) Dn: 8 it, RER a ee X 
Leptophleum rhombieum, Du.................. Ne? < 
SHEMATUX AO UN Rd ae te de le a > 
Dicymophyllum renifonme, Da TASER MN SCH Tie ees 
Palophyton/princeps nf linge avs Sora boat ne Dd x 
Pe. — SOSH LL ENE oo ER MONS RETRO ER Re IAE AE DOS eee 
Archæopteris Jackson, Dili ...7 20/7010 6502 SUR MARNE TON AR | 
A:—Gaspiensis Dn. and iA.) ODUSA: 4.5 tr ctte lite la RER 
RACiODienS SELDEN st LEE eee Mon tees |v Bich de nie Me RE 
C!}aneustiiolia, (tines Se) chee MERE ciel ne eee 
Asterocalamites scrobiculatus v. inornatus, Dn.......|........ 
Arphrestigma gracile, SOW 66 wt Oe cists alt a ete apna 
Anders tase Mort eo) as okt cae id rat we bbs ate ae a ee 
Prototaxites Logani (Nematophycus Carr.)........... 
Nemataxylon crassum, Dn. (Nematophycus Penh.)....|........ 
N.—tenue, Dn.(Nematophycus Penh.)...............1........ 
KMS 
X XX X XX XX 
The species of plants reported by Sir William Dawson from Gaspé 
are of peculiar interest, whether we consider them in their clear relation 
*Fossil Plants of the Devonian and Upper Silurian formation of Canada, Mont- 
treal, 1871. 
