Bevietr of Recent Geolofiical LIferafiire. 127 
low lands of southei-n Sweden by the present lakes Wettern and Weu- 
ern, and probably northeast across the low area of lakes Ladoga and 
Onega to the White sea and Arctic ocean. 
3. Ancyhi.s iime, when the Baltic basin, on accovmt of gradual u])lift- 
ing, became a great fresh-water lake, with shores in part since raised 
50 to 150 feet above the present water level, outflowing through the Cat- 
tegat by a river which probably fell some 53 feet before reaching the 
North sea. The lacustrine fauna comprised Ancylus ffuviafilis, Lim- 
ncea ovata, Pisidia, and other Mollusca. with fresh-water Ostracoda, 
and the climate was temperate. 
4. Litorina time, when the area of the Cattegat and Danish archipel- 
ago sank somewhat lower than now, permitting inflow of marine cur- 
rents to the Baltic so that it became Salter and warmer than at present. 
Two species of Litorina, and others of Scrobicularia and i^/.s-.wc/., ex- 
tended north into the gulf of Bothnia, where now the water is too fresh 
for their existence. The uplift of the northern part of the Baltic basin 
since the Litorina time has ranged from 100 to 300 feet. 
5. Limncea time, when the strait and archipelago became more shal- 
low, nearly as now. Limncea species then immigrated where the Litor- 
incB had before flourished. This stage is perhaps scarcely distinct from 
the next. 
G. Mya time, extending to the present day, characterized by the im 
migration of Mya arenaria from the North sea into the Baltic. w. u. 
RECENT PUBLICATIONS. 
/. Govennnent and State Reportn. 
Bull. N. Y. State Museum, vol. 3, no. 11. Salt and gypsum indus- 
tries of New York, F. J. H. Merrill. 89 pp.. plates and maps, 1893. 
The same, vol. 3, no. 12. Clay industries of New York, Heinrich 
Ries. Pp. 93-262, map, 1895. 
//. Proceedings of Scieiitific Societies. 
Proc. Acad. Nat. Sci. Phila., 1895, pt. 1. New and otherwise inter 
esting Tertiary Mollusca, G. D. Harris; The Eocene Tertiary of Texas 
east of the Brazos river, Wm. Kennedy; Does the Delaware water gap 
consist of two river gorges, Emma Walter. 
Bull, of the Geographical Club of Phila., vol. 1, no. 5, 1895. Report 
on geology, Peary Auxiliary Expedition of 1891, T. C. Chamberlin. 
Journ. Elisha Mitchell Sci. Soc, vol. 11, part 2, 1891. History of the 
Atlantic shore line, H. L. Harris; An examination into the nature of 
Palajotrochis, C. H. White. 
LII. Papo-s ill Scientific Journals. 
Science, June 14, 1895. Current notes on physiography (IX), W. M. 
Davis ; Volcanic dvist in Utah and Colorado. Henry Montgomery : Vol 
canic dust in Texas, E. T. Dumble. 
Science, Jvme 21, 1895. On a Devonian limestone-breccia in south- 
western Missouri, O. H. Hershey; Current notes on physiogra])hy (X), 
W. M. Davis. 
