56 Scientific Intelligence. 
fossils of the Primordial, Canadian, Trenton, Subcarboniferous, 
Carboniferous, Jurassic, — ous and Tertiary Periods ; and 
illustrated by twenty-one plate 
(2.) Report upon the extinct Vortebreta obtained in New ora’ 
by parties of the Expedition of 1874; f, 
AED fossils of the Mesozoic periods, and geology of Meso- 
oic and Tertiary beds; (2) fossils of the Eocene; (3) fonetls of 
the Loup Fork group; and illustrated by sixty-two plates 
rof. White’s valuable re ods has already been psielly “noticed 
in vol. xii of this Journal (18 
Prof. Cope’s report ren descriptions of a large number of 
vertebrate fossils, including species of fishes, ge Pq and 
mammals. Some ‘of t e general saute arrived at w regard to 
the species of the Eocene of New Mexico are pres ones in vol. 
xii of this Journal, asre, p- 297). The Loup Fork (or Loup 
River) group, a s Dr. Cope observes, has now been identified at 
three widely eratietie" localities: by "Dr. Hayden in the Upper 
Missouri region, and by Dr. Cope in Colorado, and in New 
its the Santa Fé a first studied by Dr. Hayden, bein ng 
f this horizon. The group underlies the “ White River group” 
in the Missouri region, and has been regarded as Pliocene. Dr. 
Cope has described thirty-four species of Vertebrates from these 
those of the White River beds, they appear to be somewhat older 
in oe geological relations than —_ and hence, he has sug- 
ed (first in 1875) that they may be Upper Miocene, Th 
= favoring this supposition are stated to be Amphieyon, 
elaepe Hippotherium, Aceratherium (Aphelops), 2 Mastodon 
of M. angustidens, Pseudelurus, Steneo The 
tice "Fy the White River and Loup Fork — differ, widely 
in genera from those of the Eocene. The 6 2 lithographic plates 
of fossils illustrating Prof, Font s Memoir are crowded with good 
gures. Nineteen of them are occupied with figures of parts o 
skeletons of different species of oe (Bathmodon of Cope 
1872-1875) named by Dr. Cope, CU. cuspidatus, C. lobatus, ©. 
et C. radians, C. latidens, C. elepha ntopus, C. molestus, 
C. simus. Prof. Cope discusses several controverted points, 
Shak we leave without no 
2. Summary of field pee ve the United States Geological 
and Geographical Survey of the Territories, under the charge of 
Dr. AYDEN, for the season of 1877.—The work of the 
United States Geological and Geographical Survey of the Terri- 
tories in charge of Dr. F, V. Hayden has been prosecuted with 
— success during the past year. The surveys in Uolorado 
g been completed psn the previous year, the parties 
png Ae: their work ina belt of country lying mainly in the 
western half of Wyoming, but also embracing piissead pact 
of Utah ae Idaho; all lying immediately north of the region 
embraced in the e Survey of the 40th Parallel by Clarence King. 
The parties “all took the field on the first of June. 
