Personal and Scientific News. 411 
ley, giving the most favorable conditions for the:incoming of the marine 
fauna. 
The physical features of the deltas so well described by Merrill, Davis 
and Taylor along the Hudson and the Mohawk are all satisfactorily at- 
tributable to the presence of a glacial lake, which I have called lake 
Hudson-Champlain, dammed on the north by the retreating ice-sheet 
and held somewhat above the sea level by a greater elevation of the land 
at the mouth of the Hudson and southward. The submarine continua- 
tion of the Hudson river channel is submerged only 200 to 250 feet for a 
distance of nearly ninety miles southeastward from Sandy Hook, and I 
believe that this area during the Champlain epoch was a land surface 
across which the Hudson river outflowed from the glacial lake of the 
Hudson and Mohawk valleys, and later from lake Iroquois when the de- 
parture of the ice east and north of the Adirondacks allowed these lakes 
to become united? 
A seesaw movement during the Recent epoch, uplifting the land at 
the north and depressing it at the south, has given to the deltas of the 
Hudson and Mohawk their increase in altitude from south to north, and 
has raised the old sea shore at Montreal to a hight of more than 500 © 
feet; while the channel of the Hudson has been carried down so that the 
sea now sends its tide to Albany, the sinking of the mouth of the river at 
the Narrows having been at least 100 feet, according to Merrill, and the 
subsidence farther southward along the submarine channel probably 200 
to 300 feet. This movement indeed appears to be still continued on the 
New Jersey coast at the present rate of perhaps two feet in a hundred 
years. WARREN UPHAM. 
Somerville, Mass., May 9, 1892. 
PERSONAL AND SCIENTIFIC NEWS. 
REPORT OF A COMMITTEE ON THE CLAIMS OF WILLARD GLAZIER. 
St. Paut, Minn., May 9, 1892. 
To the Executive Council of the State Historical Society of Min- 
nesota. 
The special committee appointed by you to consider the com- 
munication of Capt. Willard Glazier relative to his alleged dis- 
covery of the true source of the Mississippi river, has to report 
as follows: 
1st. His charts are hydrographic and topographic misrepre- 
sentations. 
2d. His claim that among his assistants were noted geogra- 
phers and expert engineers, is a bold fiction apparently devised to 
mislead the credulous. 
3d. Many of his assertions are willful perversions of well 
established geographic and historic facts, and others betray a 
