GEOLOGICAL SURVEY OF THE TERRITOEIES. 11 



a leaf of this species; another specimen, with leaves of Jiiglans rugosa, 

 lias a small nut which seems referable to the same, Hazel. It is slightly 

 shorter and broader than the one figured as G. McQuarrii, in Heer's 

 Fl. Arc, PI. ix, Fig. 5. 



MoRUS AFFiNis, sj). nov. Leaf broadly ovate, truncate-cordate at 

 base, abruptly pointed, with borders irregularly serrate,(?) (the stone is 

 coarse-grained and the borders undistiuct.) Secondary veins oblique, 

 (angle of divergence, 30° to 35°,) nearly parallel, tlie basilar pair only 

 approaching nearer to the superior one in ascending to the borders ; all 

 nearly straight, deeply marked, abruptly curving and anastomosing at 

 a short distance from the borders; nervilles distinct, numerous, parallel, 

 branching. The lowest pair, only of secondary veins, is much divided 

 outside in oblique branches, parallel and curving near the borders, like 

 the secondary ones ; texture of the leaves apparently thin. Except that 

 the nervilles are more uumerons, the nervation and areolation of this 

 species is in every point similar to that of our living M. ruhra, L., as 

 is also the form of the leaves which in one of the specimens, at least, 

 appears to have one side slightly cut in one lobe. It is regretabie that 

 the borders are not distinctly seen. The four specimens of this 

 species have the same characters. 



Ficus Gaudini, Lsqx., Eeport, p. 300. The specimen is a piece of 

 fine-grained sandstone of the same kind and appearance as that Irom- 

 the unknown locality remarked upon in Eeport, i>. 300, and which there- 

 fore should be referred to Bvanston. The leaf is identical in characters 

 with those formerly described. 



Platanus aceroides, Gopp. The leaf preserved nearly entire has 

 the broad nearly truncate base of this species, with secondary basilar 

 veins at an angle of 40° ; the lateral lobes are long and pointed too, and 

 therefore the identification is certain. The same specimen, however, 

 bears two leaves of P. Guillelnuv, Gopp., whose characters are 

 equally well marked by more oblique basilar veins, borders descending 

 in an acute angle toward the petiole, along which they abrupt!}" pass in 

 a short wing. Heer, at first, united both species for the European spe- 

 cimens, and only admitted them as distinct in examining leaves from 

 the North Greenland Tertiary, (Fl. Arc, II, p. 473.) 1 am as yet uncer- 

 tain if this separation is sufficientlj" authorized. Some specimens of 

 ours are referable to both forms, and, indeed, leaves of our living P. 

 occidentaUs show in their outlines, and even their nervation, diifer- 

 ences which in a fossil state would authorize a separation of species, if 

 seen from separate specimens, more legitimately than from the various 

 forms referable to both the fossil ones. The presence, however, of leaves 

 of a same type upon a same piece of shale, has no w^eight to decide the 

 question of identity. The trees of the Tertiary, like those of our time, 

 are generally grouped at the same place by a kind of familj^ intimacy : 

 Juglans nigra\fith Garya alha ; Acer saccharinutn and A. 7'ndrum. species 

 of Quercus, &c., and of course their leaves are found side by side upon 

 the ground, though coming from different trees. 



CiNNAMOMUM ScHEUZERi, Heer. Eepresented by a poor specimen. 

 The lower part of the leaf is erased and no part of the nervation is dis- 

 tinguishable but the medial nerve and the two lateral veins, ascending 

 to three-fourths of the leaf and curving inward along the borders. It 

 might be referable to G. polymorphum^ Heer, the leaf being larger than 

 in the common forms of G. ScJieiizeri; a true Ginnamomum^ however. 



CiNNAMOMUM MississiPPiENSE, Lsqx. Two leaves upon the same 

 specimen. They are similar in their characters, even in size, to those 



