Recent /Publications. 191 
in the near vicinity of the two rivers, which fihow, when taken to- 
gether, an uninti'rrtipted and continuous view of the HucceHsion of the 
strata from the White Limestone at the top of the Tertiary down at 
least to the Tuscahjosa jjroup of the Cretaceous. 
The report also contains a full account of the hil)ilography r)f the 
lower Cretaceous formations of North America, by Mr. W J. McGee. 
RECENT PUBLICATIONS. 
1. State and government publications. 
Fossil Fishes and Fossil Plants of the Triassic rocks of New Jersey 
and the Connecticut valley. 1888. By J. 8. Newberry. U. S. Geol. 
Survey, Monograph xiv. Washington, 1888. 4to, pp. 95. Plates 26. 
Annual report, Geological Survey of Arkansas, 1888, vol. iii. The 
geology of the coal regions ; a preliminary report upon a portion of the 
coal regions of Arkansas. By Arthur Winslow, assistant geologist in 
charge, x, 122 pp., Svo, one map; Little Rock. 
2. Proceedings of scientific societies. 
Remarks upon sedimentation in the Cincinnati group. By Jos. F. 
James. Bui. Cin. Soc. Nat. Hist. vol. xii. No. 1. April, 1889. 
Notes on the geological relations and mode of occurrence of some of 
the more important economic minerals of eastern Quebec. By. R. W. 
Ells. Trans. Ottawa Field Club, vol. iii. No. 2. Aug. 1889. 
3. Papers in scientific journals. 
Amer. Jour. Sci. July No. A new Erian (Devonian) plant allied to 
Cordaites, Sir Wm. D.^wson. Stratigraphical position of the Olen- 
ellus Fauna in North America and Europe. C. D. Walcott. Notes on 
the occurence of Rock in the Absaroka range, Wyoming territory. A. 
H.\r,uE. On Allotropic Forms of Silver. M. C.vrkv Le.v. The Peri- 
dotite of Pike county, Ark. J. C. Bra.vnek and R. N. Brackett. PI. i. 
On Prevailing Misconceptions re^iarding the Evidence which we ought 
to expect of former Glacial Periods. J. Croi.l. Mineralogical Notes on 
Fluorite, Opal, Amber and Diamond. G. F. Kuxz. Discovery of 
Cretaceous Mammalia. O. C. Marsh. Plates ii. to v. 
Aug. No. Earlier Cretaceous rocks of the northwestern portion of the 
dominion of Canada. Gbo. M. Dawso.v. Certain Porphyrite Bosses in 
northwestern New Jersey. J. F. Kemp. Great lava flows and intrusive 
trap sheets of the Newark system in New Jersey. Nelson H. Darton. 
Recent Explorations in the Wappinger valley Limestones and other 
Formations of Dutchess Co., N. Y. W. B. Dwioht. PI. vi. Notice of 
Gigantic Horned Dinosauria, from the Cretaceous. O. C. Marsh. 
Discovery of Cretaceous Mammalia. O. C. Marsh. Pis. vii. and viii. 
Silicic acids. Geo. F. Bbcker. 
