NOTE ON NIAGARA FALLS. 
The following diagrams are from the map issued by the New York Com- 
mission, which is based on surveys made in 1883 by Thomas Evershed, 
under the direction of the State Engineer. The Institute is indebted to the 
proprietors of Nature for their kind permission to insert the diagrams and 
accompanying remarks. 
The diagrams give the outline of the Falls as determined on three 
surveys, namely ; The New York Geological Survey of 1842; The United 
States Lake Survey of 1875: and The Survey of 1883. 
Mr. E. Wesson, of Providence, R.I., remarks on these diagrams as 
follows :— 
“TY divide the contour from # to Goat Island into thirty-three sections, 
disregarding for obvious reasons the overflow north of 3, on the Canadian 
qi! 
Sofft 
eve" iff GOAT 
2% eM, ISLAND 
A 
TRUE, NORTH 9% 2 eae My, 
qi I) 
HH} Ny 
AUP ruRnET BOCK 
7882 
shore. From fto « are eleven sections, from € to Z are twelve sections, from 
Z to Goat Island are ten sections. It is obvious that much the greater work 
has been done between (£ and ¢, and that the innermost recess has kept in the 
same relative position. 
