72 SIE W. DAWSON 



lu counectiou with the reference of this fruit to Tiliaceae, it is worthy of note 

 that Saporta iucliues to the belief that the previous species may bi.^long not to a 

 hazel but to a Tilia or linden. 



Carpolithes. — Oval, flattened bodies, probably seeds or fruits, about one centimetre in 

 length, and without distinct markings. They may be seeds possibly of Taxites, 

 but their affinities for the present must remain uncertain, and I do not give them 

 a specific name, in hope of additional facts being discovered. 



Pyritized and Ferruginous "Wood. — The collection contains several branches and por- 

 tions of stems evidently of Exogenoiis trees, but in a state of preservation which 

 does not admit of distinct determination. Schroeter, as already stated, has des- 

 cribed fossil wood from these beds, one species of which, his Sequoia Canadensis, 

 may be the wood of Sequoia Langsdorjfii, another is not improbably that of Platanus 

 Ungeri. Another of his species of fossil wood is referred to the genus Ginkgo, but 

 it may have belonged to Taxites Olriki. 



LeCtUMINOSITES (?) BOREALis, S. N. (PI. X, Fig. t). — Pods of unequally obovate form, 

 apparently arranged on the sides of a stem. They are grooved or ribbed longitu- 

 dinally, and resemble L. arachioides, Lesq., except in their smaller size and broader 

 form. One shows what seems to be the remains of a sheath or calyx. 



Callistemophyllum latum, S. N. (PI. X, Fig. 8). — Leaf entire, obovate, without petiole. 

 Midrib distinct, secondary veins obsolete ; indications of delicate reticulation. This 

 is probably a Myrtaceous leaf and may, provisionally at least, be placed in the 

 genus above named. It seems quite different from the other described species. 



II. 



Mr. Weston's Collections from the Laramie of Bow River. 



With the above specimens from Mackenzie River, there have been placed in my 

 hands some interesting leaves collected by Mr. Weston in the Upper Laramie sandstones, 

 near Calgary. They belong to two species, Popnlus Richardsonii and Quercus platania of 

 Heer, (PI. XI, Fig. t). The leaves of the former species are chiefly remarkable for their large 

 size, but in other respects are similar to those of Mackenzie River. The latter species is 

 represented by leaves of great size. One of them must, when perfect, have been at least 

 ten inches in length without the petiole. This species has not yet been found at 

 Mackenzie River, but is one of those common to the United States Laramie and that of 

 Canada, and found also in Greenland. As the species seems to be variable, and Heer had 

 only fragments in his collections, I figure a small, but perfect, specimen in Mr. Weston's 

 collection. Schimper regards the place of this species in the genus Querciis as " fort 

 contestable ", and it is quite possible that when its fruit shall be known, it may be found 

 to have different affinities. It was evidently one of the most magnificent of the Laramie 

 species in point of foliage. Its leaves are in some points not unlike those borne on 

 vigorous, young shoots of Tilia Americana, though narrower in proportion to their breadth. 



