330 The American Geologist. November, 1893 
order, the Raritan clays, Camden clays, and Lower, Middle and Upper 
marls. Excepting the highest layers of the Upper marls, which bear an 
Eocene moiluscan fauna, the whole series is of Upper Cretaceous age, 
clearly related to beds of the southern states, and equivalent with the 
Ft. Pierre and Fox Hills formations of the upper Missouri region. The 
Lower green marls, which are the most richly fossiliferous, contain 303 
species of mollusca; and next to this in order of abundance is the Eocene 
division of the Upper irreen marls, which have 79 molluscan species. 
The forms described in the present work comprise loG gasteropoda and 
'l'i cephalopoda from the Cretaceous beds, and 52 of the former class 
and two of the latter from the Eocene. Most of these are restricted, so 
far as known, to New Jersey. The number of the Cretaceous gastero- 
pods found elsewhere is 17, wholly belonging to the southern states; and 
of Cretaceous cepholopods eight, of which six are common to the south- 
ern states and Dakota. Among the Eocene gasteropods, nine occur in 
Alabama and one other in South Carolina. 
Cretaceous Fossil Plants from Minnesota. By Leo Lesquereux. 
pp. 1-22, with Plates A and B, forming chapter i in vol. iii, Final Re- 
port of the Geol. and Nat. Hist. Survey of Minnesota; Feb. 15, 1893. 
Fifty -five specimens submitted by Prof. N. H. Winchell, the state geol- 
ogist, to Prof. Lesquereux, were found to represent 28 species. Two, a 
pine and a sequoia, aregymnosperms. All the others are dicotyledons, 
belonging to eighteen genera, which are distributed to the three great 
subdivisions of this class of plants, seven being Apetaleae, two Gamo- 
petaleae, and nine Dialapetale*. At the epoch of their earliest appear- 
ance, a diversity and perfection of development is displayed similar to 
that of the present day. Eight of the species, belonging to an equal 
number of genera, namely, Sequoia, Populus, Alnitee, Ficus, Dios- 
pyros, Cissus, Dewalquea, and Protophyllum, are new. Twenty-three 
species were obtained from the Dakota sandstone on the Cottonwood 
river near New Ulm, three near Mankato, two in Goodhue county, and 
two at Austin in Mower county. 
The Microscopical Fauna of the Cretaceous in Minnesota with addi- 
tions from Nebraska anil Illinois. By Anthony Woodward and Ben- 
jamin W. Thomas, pp. 23-54, with Plates C, D, and E, forming chapter 
ii in the volume before noted; Feb. 15, 1893. In this paper are de- 
scribed 30 species, belonging to 18 genera, of foraminifers, mostly found 
in the glacial drift but originally derived from Cretaceous beds. The 
samples of the till or boulder-clay examined were supplied by Prof. N. 
H. Winchell from Meeker county, Minn., by Prof. G. D. Swezey from 
Nebraska, and by the authors from their own collections in the vicinity 
of Chicago. Much of this drift abounds with remains of Foraminifera, 
radiolarians, coccoliths, rhabdoliths, sponge spicules, and other mi- 
croscopic organisms, many of which are identical with species now liv- 
ing in the Atlantic, Mediterranean, and other oceanic waters. Sam- 
ples of Cretaceous shales collected by H. V. Winchell on theLittle fork 
of Rainy river, and of soft limestone from the Niobrara formation 
