TJie Geological Society of America. — Hovey. 103 
were formed, especially in the district south and west of Clinton, 
where the State is building an immense reservoir as an addition to 
the water supply of Boston and the Metropolitan district. The de- 
foresting of this area gives great topographic distinctness to the delta? 
and other features of the lake, and the numerous deep borings and 
extensive excavations have very fullv developed the structure of the 
deposits. 
" A Remarkable Landslip on the Riviere Blanche, Portnenf 
County, Quebec," by George M. Dawson, director of the Ca- 
nadian geological survey. In this paper a brief account is given of 
the landslip that occurred on May 7th, last. It affected the thick 
deposit of Leda clay that floors this part of the St. Lawrence plain 
and serves to indicate that a clay of this character may. under certain 
circumstances for a short time, behave almost as a liquid. An area 
of about 86 acres flowed out, leaving banks 15 to 30 feet high and filled 
the river valley, which is i,oco feet wide, for a distance of two miles 
below the narrow outlet through which it escaped, thougii the slope 
of the valley is only fifteen feet per mile. 
"The Volcanoes of Southeastern Russia," bv H. Fielding 
Reid, of Johns Hopkins University. After the meeting of the in- 
ternational geological congress at St. Petersburg in 1897, the author 
visited the high volcanoes of Elbruz. Kazbec and Ararat. The paper 
gave a brief description of these famous mountains, with the help of 
lantern illustrations from photographs by the author. Each of the 
two summits of Mt. Elbruz shows a crater and Mt. Kazbec shows a 
summit crater. The top of Great Ararat consists of two domes, but 
there seems to be no present indication of a summit crater. Deep 
snow covers the summit. Little Ararat shows indistinct evidence of 
a summit crater. 
" Ice Sculpture in Western New York" by G. K. Gilbert, 
U. S. geological survey. Careful study of the Niagara escari)ment 
in Niagara county shows that its greater features are pregiacial. but 
glacial erosion wrought important modification. The Medina shale 
was so deeply sculptured as to obliterate its pregiacial relief and sub- 
stitute a broad fluting in the direction of ice movement. At Thirty 
Mile point a mass of strata several liundred feet broad was move! by 
the ice. 
•' The Wind Deposits of Ea^ter)i Minnesota," b\ C. W. 
FIall and F. W. Sardeso.n, University of Minnesota. The [laper 
treated of the character, origin and age of the lag gravels and dune 
sands so frequently seen in eastern Minnesota — more particularly in 
the district between the Mississippi and Saint Croix rivers. These 
deposits in the vicinity of Minneapolis were more particularly studied 
and their relations to some fossiliferous post-glacial water deposits 
were considered. 
" The Iroquois Beach at Toronto and its Fossils," b\ A. 
P. CoLEiMAN, Toronto, Canada. The Iroquois bcacli north of lake 
