70 ROYAL SOCIETY OF CANADA 
Radial.—Ray cells straight, somewhat narrowed at the ends, equal to about 
2-6 tracheids; the pits on the lateral walls large, oval, round or 
oblong, narrowly or even obscurely bordered, 1-5, chiefly 1-2 per 
tracheid. 
Bordered pits numerous throughout the tracheids, chiefly in two, 
sometimes in 3-4 rows, hexagonal or when more distant, oval, about 
12.5 mic. broad. 
Tangential.—Rays uniseriate or 2-seriate in part, upwards of 40 cells high, 
the oval or round cells 17-35 mic. broad. 
CORDAITES ACADIANUM, Dn. 
Fig. 18. 
Bib. :—Can. Nat., 1863, VIII., 483 ; Acad. Geol., ed. 3, 1878, 473: Quart. Jn’l 
Geol. Soc., 1866, XXII., 145; Schimper. Pal. Veg., III., 577; Can. Rec. 
Se., I., 1885, 155 ; Knowlton, Foss. Woods & Lig. of the Pot. Form., 
1889, 52; Grand’Hury, Flor. Carb. du Dept. de la Loire, 1877, 265; 
Knowlton, Proc. U. S. Nat. Mus., XII., 608. 
Dist. :—Middle Coal Measures, Joggins, N. S.; Port Hood, Mira and Glace 
Bay, C.B.; Dorchester, N.B.; St. Georges Bay, Newfoundland. 
This species was originally described in 1863 from material ob- 
tained from the Joggins, Nova Scotia, where it was found in the form 
of large trees, usually silicified or calcified. It presents no noteworthy 
features beyond the unusual size of the tracheids in transverse section. 
Sir William Dawson’s notes include the description of an unpub- 
lished species under the name of C. acadiodes. A very careful examina- 
tion of the material shows that this does not present enough deviation 
from C. acadianum to justify its recognition as a separate species. 
Large trees, usually silicified or calcified. 
“ 
RSS le 6 OU NS TT ET 

Transverse.—The large tracheids are about 62 x 62 mic. broad, the walls 9.5 
mic. thick. Scattering tracheids show resinous contents. 
Radial.—Ray cells often somewhat abruptly contracted at the ends, equal to 
2-4 tracheids ; the lateral walls with numerous round or oval pits, 
from 4-10 per tracheid, chiefly about 6, the border often very narrow, 
the oblong orifice % the diameter of the pit. 
Bordered pits numerous, hexagonal, 12.5 to 16 mic. broad, crowded 
in 2-5 rows. 
Tangential.—Rays very variable, ranging upwards of 60 cells high, resinous, 
more or less 2-seriate throughout, the oval or oblong cells from 
17-31 mic. broad. 

1 Can. Nat., 1863, VIII., 433. 
