PROFESSOR HEER ON THE EOSSIL ELORA OF NORTH GREENLAND, 469 
27. Salix Raeana , Hr., Plate XLIII. fig. 11 a. FI. Foss. Arct. p. 102, pis. iv. figs. 
11-13; xlvii. 11. 
The collection contains some fragments of this species, and an entire leaf, Avhich 
agrees very well with the leaves from the Mackenzie (FI. Foss. Arct. pi. xxi. fig. 13). It 
is oblong, with an entire margin ; the secondary nerves approximate and are strongly 
curved. 
28. Salix varians, Gcepp. \ Plate XLIII. figs. 12, 13. 
The margin being quite obliterated, an exact determination is not possible. The 
leaf is large, and lanceolate ( \ ), the secondary nerves distant. From the midrib spring 
several short secondary nerves, which are united with each lower secondary nerve (a 
character peculiar to leaves of willows). Besides a leaf is a twig, also probably be- 
longing to this species (fig. 13 5); it is thin, and bears several buds. 
XIII. Betulace^e. 
29. Alnus nostratum , Xing. FI. Foss. Arct. p. 103, pi. xlvii. fig. 12. 
Two specimens, lying together. One shows on each side eight secondary curved 
nerves, from the lower of which spring tertiaries. 
XIV. ClJPULIFERiE. 
30. Carpinus grandis , Ung. % Plate XLIY. fig. 11 c. Hr. FI. Foss. Arct. p. 103, pi. ix. 
fig. 9. 
Only some fragments of leaves. 
31. Corylus M c Quarrii , Forb., Plates XLIY. figs. 11 a\ XLY. 6 5. Hr. FI. Foss. 
Arct. p. 104, pis. viii. figs. 9-12 ; ix. 1-8 ; xvii. 5 d ; xix. 7 c. Hob. Atanekerdluk. 
This is a very good specimen, showing the very beautiful nervation and acute teeth. 
Beneath this leaf is a fragment, probably of Carpinus grandis , Ung. (fig. 11 c), and two 
portions of leaves of Ilex macrophylla (fig. 11 5). Plate XLY. fig. 6 5 is a narrower 
leaf, of which the sharp, double teeth are very well preserved. 
32. Corylus insignis, Fir. Plate XLIX. fig. 5. Foliis ovato-ellipticis, apice acuminatis, 
duplicato-serratis. Fir. FI. Tert. Helv. ii. p. 43, pi. lxxiii. figs. 11-17. Hab. Atane- 
kerdluk. 
A fine leaf, agreeing well with the species from the Swiss Molasse. It difiers from 
C. M c Quarrii in the base not being emarginate, and its shape being narrower. It ap- 
proaches Alnus nostratum , Ung. (FI. Arct. pi. xlvii. fig. 12 5), but the secondary nerves 
spring at more acute angles, and the leaf is narrower, and tapered towards the apex. 
The leaf is oval-elliptical, acuminate, very sharply toothed, and rounded at the base. 
There are 6-7 secondary nerves on each side, the lower of which send out tertiaries. 
3 R 
MDCCCLXIX. 
