120 The American Geologist. Feb. isoo 
"A moraine of Uetrocession in Ontario," and it aimed to demonstrate 
the mi)raiiu(; cliaracter of the belt of loose ("Artemisia") gravel extend- 
ing from Owen sound to Brantford, and thence stretching about mid- 
way between lakes Ontario and Simcoe. The paper was briefly 
discussed by Dr. Spencer. 
Mr. W. J. McGee presented a communication on "The southern 
extension of the Appomattox formation." T\.\% term was applied in 
1888 to a deposit of orange-colored sands and clays, with occasional in- 
tercalations of gravel, developed on and between the rivers of eastern 
Virginia, and widening southward. The writer had recently traced 
the formation, as the prevailing surface deposit, through the Carolinas, 
Georgia, Alabama, and Mississippi. It is a marine or brackish-water 
deposit, yielding no fossils save fragmentary cones and bits of lignite. 
Much of the "Orange Sand" of Hilgard belongs here. It rests uncon- 
formably on the Grand Gulf strata and the fossiliferous Miocene of the 
Atlantic coast. It is overlaid by Pleistocene deposits. None of its 
fossils are characteristic. 
Mr. Charles 1). Walcott presented a communication on "The value 
of the term 'Hudson River group' in geologic nomenclature." Com- 
parison of the Hudson liiver section with that in Lorraine. Jefferson 
county, N. Y., and the Cincinnati section in southern Ohio, proves 
that the essential paheontologic features of the Hudson River group, 
as originally defined, are presented in all. Discussed by president 
Hall. / 
A paper was presented by professor H. M. Seely in behalf of himself 
and president Brainerd, entitled "The Calciferous formation in the 
Champlain valley." The result of the authors' studies made vast ad- 
ditions lo the thfckness of the Calciferous, demonstrated the imaginary 
character of the so-called "Quebec group," and necessitated serious 
modifications of prevailing views of that portion of Vermont. Discussed 
by Walcott and Ilitchcock. 
Closely connected with this was the paper by Mr. R. P. Whitfield 
on "The" Fort Cassia rocks and their fauna," the tendency of which 
was to afford paheontologic confirmation of the stratigraphic conclusions 
of the preceding paper. 
An abstract of a paper bv Mr. R. AV. Ells, of Canada, was presented 
bv Mr. Walcott, entitled '"'The Stratigraphy of the Quebec Group." 
From this it resulted that this group is by latest determinations, en- 
tirely eliminated from the science of geology. 
Professor H. S. Williams presented a communication on "The Cuboi- 
des Zone and its fiuina— a discussion of methods of correlation." The 
author concluded that the fauna of the Tnlly limestone of New York is 
the representative of tlie fauna' of the Cuboides Zone of hurope homo- 
taxiallv ; that the relations of the two faunas may be best explained by 
the hypothesis that the fauna of the Tully limestone is not a direct 
sequent of the underlying Hamilton fauna alone, but, in its charac- 
teristic species shows evidence of community with European faunas to 
be explained by migrations. A comparison of all the related faunas at 
present known leads to the conclusion that the Cuboides and Tully 
faunas are not only homotaxial but relatively contemporaneous. Dis- 
cussed brieflv by Walcott. 
Professor Geo. H. Williams made a communication on "Geological 
and Petrographical observations in southern and western Norway." 
The regions studied in southern Norway are areas of typical contact 
metamorphism, while those in western Norway have been subjected 
to extensive regional metamorphism. The two main points illustrated 
Avere (1.) The similarity of effects produced in the same original mate- 
rial by the contact action of eruptive rocks and by orographic distur- 
bances. (2.) The power of orographic forces (regional metamorphism) 
