“dee eee BRS a VS ue Bos Se 
L. F. Ward—Mesozoic Dicotyledons. 297 
ally believed to correspond with the Cenomanian of Europe. 
These researches of Heer appeared too late to be embodied in 
himper’s great work. 
Finally, as crowning this fruitful year’s labor, appeared Mr. 
Lesquereux’s important quarto volume on the ‘Cretaceous 
Flora of the Western Territories,”® reviewing the results of all 
previous researches in this country, and describing and illustra- 
ting 107 species of American Cretaceous Dicotyledons. In Hay- 
den’s annual report for the same year® 26 species are described 
and some figured, but most of these were also more fully 
treated in the Cretaceous Flora. 
Flora der westftilischen Kreideformation, an important work 
reviewing the entire Cretaceous flora of Westphalia. Although 
fossil plants had been found throughout almost the entire Cre- 
taceous series as there represented, still it was only in the Seno- 
nian that any Dicotyledons were detected. At two quite 
distinct horizons within the Senonian such plants were found, 
37 Species being credited to the upper and 24 to the lower 
Collected in the vicinity of Aix-la-Chapelle no less than two 
hundred species of dicotyledonous plants, and it is to be hoped 
that this paper may form a beginning, at least, of the much- 
needed work of acquainting vegetable paleontologists with the 
nature of this remarkable flora. 
. The sixth volume of Heer’s Flora Fossilis Artica appeared 
in 1882. In this the Cretaceous flora of Kome and Atane are 
reviewed with fresh materials. While, unable to find any com- 
*? Contributi i Western Territories, Partl. The 
Cretaceous Tides. By T taentacade Hees ape of the U 8. Geological Sur- 
a the Territories, F. V. Hayden, Geologist-in-charge, vol. vi. Washi 
Ep. 27143 i-viii 
- Vol, xvi, 1880. es oe oie 
aa — les feuilles querciformes des sables d ato ee ae sh 
1889 8, 1881. (Compte rendu du Congrés de botanique e , 
*° Schimper, Traité de Paléontologie Végétale, Paris, 1869-1874. -Tome iii, pp. 
671, 673. 
Am. Jour. Sct—Turep Serres, Vor. XXVII, No. 160.—APRIL, 1884. ° 
20 - 
, 
