Personal and Scientific yeirs. 67 
ObservationH on the f/lucial pheianneiKi of j\'nrf<iiui(l/<i/i(l, Luliniddr, ond 
Houthcm Greeiil(tnd. G. Fredekick Wright. 
Hig?dand level grdveh in northern Neir England. C H. Hitchcock. 
VariatiouH of glaciers. Harry Fielding Reid. 
Discrimination of glacial arriimulation and incusion. Warken Upham. 
Climatic conditions shown Oy North American interglacial deposits. AVar- 
REN Upham. 
Glaciallalx-es in western Neio Vor/i. H. L. Faiiuiiild. 
Lake Newherrg, tJie siicces.'ior <f lalce Warren. H. L. Faiu('iiii,d. 
Notes on the glaciation of Neiifoundland. T. (\ Chamberlix. 
The pre- Cambrian floor in the Northwestern states. C. \V. Hall. From 
the records oF deep and artesian well boring-s a series of sections and 
maps shows the extension of the pre-Canibrian rocks from their outcrop- 
ping areas downward under the later formations to the successive deptlis 
of contours al the [jresent sea level, and at 500 feet and 1,000 feet be.low 
that level. 
A fnrtlu'r contribution to oiir laioicledge of the Luwrentian. Frank i). 
Adams. Descrii)tion of an area of anorthosite and surrounding crystal- 
line rocks of the Grenville series e.vteiiding from the island of Montreal 
about .lO miles northward. 
The crystalline limestones, ophiolites, and as.iociated schists, (f the eastern 
Adir(nidac/iS. J. F. Kemp. These limestones and schists, occurring in 
small areas, usually less than a square mile, are regarded as older than 
the gabbros and anorthosites of the Norian series, being probably the 
remnants of an extended formation which was cut up by the gabbro in- 
trusions, metamorphosed largely by them, and afterward eroded. 
77ie crystalline limestones and a.s,-:ociated roc/cs of the northwest Adirondacl: 
region. C. H. Smyth, Jr. 
Lower Cambrian roc/iS in eastern California.. C 1). Walcott. The 
White mountain range, whose structural features were noted in the 
second paper of this list. 
Deronian fossils in Carboniferous .strata. H. S. Williams. In north- 
ern Arkansas, at Spring Creek, near Batesville. 
The Pott srille series along New river. West Virginia. David WHrn<;. 
Stratigrapldc measvrement of Cretaceous time. G. K. Gilbert. Describ- 
ing regular alternations of shale and limestone, in pairs of strata lo- 
gethermostly from one to three feet thick, occurring commonly through- 
out a great thickness of the Ft. Bentcjn, Niobrara and Ft. Pierre shales 
in the Arkansas river basin. The hy])othesis suggested for these alter- 
natit)ns is ilependence upon the astronomic cycles of i)rece.ssion of the 
equino.xes. which would require some 20.000,000 years for the de])osi- 
tion of this portion of the Cretaceous series, representing perhaps half 
of the Cretaceous period. 
Notes on the Cretaceous (f western Te.ras an<l- Coahnila. .Vi.ric<i. K. T. 
DUMBLE. 
yV/y Cretaceous deposits <f the northern Iialf of the Atlantic coastal plain . 
William 11 Clark. 
The margi7ial develop nant of the Miocene in eastern Neir Jersey. William 
H. Clark. 
hiedimentary geology if the Baltimore region. N. H. l).\RTi).N. 
Tlw surface formations (f southern. New Jersey. KoLLiN D. Salishuhv. 
On neir firms of marine algie from the Trenton limestone, with obserra- 
tionson Huthograptus laxus Hall. \\. P. Whitfield. 
Hpherulitic rolcanics at North Ifaren, .Wrine. W. S. Baylev. 
The peripheral i)h((ses of the great gitbbro mass of north(i(.'<tern Minnesota. 
W. S. Bavi,ey. On the northern boundary of tliis great gabbro area are 
basic and granulitic I'ocks whose composition indicates their relation- 
ships M'ith the gabbro. The basic rocks are aggregates of the basic con- 
stituents of the? gabbro, and they are characterized especially by their 
abundance of titanic iron. The granulitic rocks differ from the minerals 
