OF BRITISH COLUMBIA AND THE NORTH-WEST. AT 
20. POPULUS RECTINERVATA, S. N. (Fig. 26.) 
Leaf large, with entire margin, or only a few distant obsolete teeth, general form 
apparently broad oval or ovate. Midrib delicate; veins slightly curved, diverging from 
the midrib at an angle of about 25°, so that they appear very erect and approximately 
parallel to each other, forking twice before they reach the margin. Resembles in venation 
large and luxuriant leaves of P. balsamafera and also the P. mutabilis of Heer. 
Collected by Dr. G. M. Dawson, at Baynes’ Sound. 
21. POPULUS LONGIOR, S. N. 
Plan of venation similar to the last, but veins at a still more acute angle and the 
form of the leaf narrower and with entire margin. 
Collected by J. Richardson, at Harwood colliery, Nanaimo ; by Dr. G. M. Dawson, at 
Baynes’ Sound. 
22. PopuLus, Sp. 
This is a very large poplar leaf which must have been four inches in breadth. It has 
a venation similar to that of P. grandidentata, but the teeth of the margin much smaller. 
The specimens are in fragments. 
Collected by Dr. G. M. Dawson, at Baynes’ Sound. 
It should be noted that, in accordance with the numerous poplar leaves found in 
these beds, wood, haying the structure of modern poplar, is by no means uncommon in 
the same formations. 
23. BETULA PERANTIQUA, S. N. (Fig. 27). 
Ovate, elongate, veins at angle of about 50°, with midrib slightly curved and begin- 
ning to fork toward margin, which is entire, or with only very shallow teeth. Leaf, acute 
at apex ; less acute at base. Length of ordinary specimens, 5.5 centimetres. Breadth, 0.2 
centimetre. Six veins on each side. 
Collected by Dr. G. M. Dawson, at Baynes’ Sound. 
24. QUERCUS VICTORLE, 8. N. (Fig. 28). 
Leaf, large, probably 4 to 5 inches long; broadly lanceolate, slightly toothed at mar- 
gin. Veins nearly straight, at angle of 45°, and about 0.7 centimetre apart. Approaches 
somewhat to Q. multinervis of Lesquereux, but differs in angle of venation. 
Collected by Mr. J. Richardson, at Neweastle Island, Nanaimo River and Protection 
Island. 
25. ULMUS DUBIA, S. N. (Fig. 29). 
A fragment of a leaf with the venation of Umus. Veins nearly opposite, at angle of 
about 40° ; curved and forking toward margin, which has distant teeth. Veinlets coarsely 
reticulated, with a tendency to transverse arrangement. A few imperfect interstitial 
veins. Leaf curved, and apparently dry and harsh. Breadth, 2.6 centimetres, apparently 
somewhat oblique at base. 
Collected by Dr. G. M. Dawson, at Baynes’ Sound. 
26. SASSAFRAS, Sp. (Fig. 30, 30 a). 
A small cuneate leaf, apparently trilobed at summit, and with three slender veins, 
