“ There was no reason why the United States should provide that the state of Michigan should actually receive a profit over and above the payment to it of all its expenses for the construction of the canal and for keeping it in repair. If, through the action of the United States, a public work of national importance were constructed within the boundaries of that state, and the state itself reimbursed for every item expended by it in the construction and in the keeping of such work in repair, it would certainly seem as if the state could properly ask no more. ”

“ A surplus arising from the sales of lands and from the tolls, over and above all cost of construction, repairs, etc., after the formal transfer of the canal itself, belongs to the United States, and it is the proper party to recover the same. ”

“ The general purpose of these statutes was to build a ship canal, by means of the funds procured from the sale or other disposition of the public lands of the United States, to be used by all those whose business or pleasure should call them to pass through it in order to reach their destination. ”