AMEBICA. 129 



Wheelee, Lieut. G. M. Progress-Report upon Geographical and 

 Geological Explorations and Surveys west of the 100th Meridian 

 in 1872. Washington. 

 IN'otes of work in geology. A notice in Amer. Journ. ser. 3, vol. vii. 

 pp. 388-391, gives an account of the personnel, organization, areas sur- 

 veyed, and proposed publications of the Survey. 



WiLLCOx, J. Glacial markings and Granite Boulders in St. Law- 

 rence County, N. Y. Apatite in Laurentian rocks on north shore 

 of Rideau Lake, in Burgess. Proc. Ac. Nat. Sci. Philadel. 

 p. 275. 



WixcHELL, N. H. The Devonian Limestones of Ohio. Proc. Amer. 

 Assoc, vol. xxii. B. pp. 100-104. 



The section of these beds exposed in the valleys of the Scioto and 

 Olentangy rivers, Delaware County, Central Ohio, is as follows : — 1. A 

 hard siliceous Limestone : no fossils ; 4 to 9 feet. 2. A blue argilla- 

 ceous Limestone : Spirifer mucronatus, Cijrtls Hamiltonensis, Cyrtoceras 

 unduhtum; 35-40 feet. 3. A saccharoidal or crinoidal Limestone: 

 many Brachiopods (Delhi beds) ; 38 feet. 4. A light- coloured Mag- 

 nesian Limestone : very few fossils ; 27 feet. 5. A sandy Limestone 

 passing into a quartzo^e sandstone and into a conglomerate ; no fossils ; 

 2 to 10 feet. All these Limestones, except 5, form the " Comifcrous '* 

 group of Dr. Newberry, by whom the last is regarded as the equivalent 

 of the " Oriskany " of New York and the base of the Devonian. 1 is 

 believed to be the representative of the Tully Limestone of New York; 

 2 has been called Upper Coniiferous, but is believed to be the equi- 

 valent of the Hamilton of New York ; 3 is the exact equivalent of 

 the Corniferous Limestone of New York ; 4 represents the Onondaga 

 Limestone of New York. It is thus shown that the Hamilton group, 

 in passing tlirough Ohio, maintains a fuU development as a member of 

 the Devonian, and does not thin out. G. A. L. 



. Geological Notes from Early Explorers in the Minnesota 



Valley. Bull. Minnesota Ac. Nat. Sci. pp. 89-101. 

 Notices the works of Lc Sueur, Carver, Keating, Featherstonhaugh, 

 Nicollet, Shumard, and Hall, ranging from about 1695 to 18G5. 



"VVoLF, T. Geognostische Mittheilungen aus Ecuador. [Geology of 

 Ecuador.] N. Jahrb. Heft iv. pp. 377-398. 



Three essays : — 1, on the occurrence of quartz-andesito in the high- 

 lands of Quito ; 2, geological sketches of the Province of Guayaquil ; 

 3, on a mud- volcano on the west coast of Ecuador. E. W. 11. 



1874. 



