388 Mr. L. F. Ward on Mesozoic Dicotyledons. 
The number of species described by Dr. Newberry as new 
was 45, and the number by Mr. Lesquereux was 47. Nine 
species from Fort Ellsworth, Kansas, included in Mr. Lesque- 
reux’s list, the descriptions of which did not appear until the 
following year *, do not enter into the figures above given. 
It will thus be seen that about 75 species of Dicotyledons had 
been described from the Dakota Group and other American 
Cretaceous strata down to the year 1869. 
Far less could be said for Europe at this date. Hosius f, 
in 1869, was able to enumerate in his ‘Geognosie West- 
falens’ twenty-five characteristic species of the Quadersand- 
stein, which had been described and figured either by Von der 
Marck ¢ or by himself §. In this year, too, Heer || published 
his ‘ Fossil Flora of Moletein in Moravia,’ which belongs to 
the Lower Quadersandstein, or base of the Cenomanian. 
Twelve species are described and carefully figured. 
In Hayden’s annual reports of the geological survey of the 
Territories for 1870 and 18714], Lesquereux continues to 
enlarge the list of American species; and in 1872, Heer **, 
in his “‘ Fossil Flora of Quedlinburg,” makes further additions 
to that of Europe. 
We are thus brought down to the year 1874, which is 
marked by three very important publications. 
Schimper’s ‘'Traité de Paléontologie Végétale’ was com- 
pleted in that year, and in its fourth volume {ft 109 species 
of Cretaceous Dicotyledons are recognized. Of these 46 
are American, which shows that the author was far behind 
in the literature of the subject. He also expresses serious 
doubts as to the Cretaceous age of these plants, although this 
had been long settled here beyond a peradventure. 
Next should be mentioned Heer’s “ Kreideflora der are- 
* “On Fossil Leaves from Fort Ellsworth, Nebraska,” Transactions of 
the American Philosophical Society, Philadelphia, vol. xiii. new series, 
pp: 430-483, pl. xxiil. 
+ “Die in der westfalischen Kreideformation vorkommenden Pflan= 
zenreste ” (Beitrige zur Geognosie Westfalens), von A. Hosius. Miinster, 
1869. 
t “Fossile.... Pflanzen aus dem Plattenkalk yon Sendenhorst,’’ 
Palezontographica, xi. 1865. 
§ “Ueber einige Dicotyledonen der westfilischen Kreideformation,” 
Paleontographica, xvii. 2, pp. 9-104, Taf. xii.-xvii. 
|| Beitrage zur Kreideflora. I. Flora von Moletein in Mihren, Zurich, 
1869, 
q “On the Fossil Plants of the Cretaceous and Tertiary Formations of 
Kansas and Nebraska,” Ann. Rep. 1870, p. 870.“ Fossil Flora, Creta- 
ceous Strata, Kansas,” Ann. Rep. 1871, p. 301. 
** Beitrige zur Kreideflora. II. Zur Kreideflora von Quedlinburg. 
tt Pp. 677-679. 
