Mr. IcDO GALL. In confirmation of the same view which the Senfrom Indiana has presented, I desire to say a word. This subject is one that has attracted the attention of Senators and members of Congress for some ears past, and it is one on which there has been great difference of opinion. I have an opinion of my own, which has been obtained with some carefnlness. There is a large sheet of fresh water that enters into Tappan ba within 16 or 20 miles of NewYorkcity, and that, with a dam and locks, can be made to float, in fresh water, a navy, convenient to business, convenient to the service. It is my impression, not.altogether my conviction, but my impression, that that is the true point in which to locate the place where iron clads are to be taken care of in fresh water when not needed on the ocean. I think, however the mattebshonld be care fully inquired into by competenttifiicers, who will regard the public service and not local interests. Of course, in this I have no local interest, but my attention was called to all these points long since, and I made it some what a matter of study; and my impression is that Tappan bay, above NewYork city, on the Hudson, is the most convenient, and would be the best point for this particular service. I am told by engineers that with a dam and locks, at small expense to the Government, fresh water enough to float a navy can be had, right there, convenient to all the machine shops and to all the works of the 1st city of the Union. My imression is that that would be the best place. but I should like to have it inquired into by men who profess to understand this business as a science. I think it should be done. It is customary, in careful legislation, to have commissions appointed aboutquestions of this kind, commissions of men O particular skill in their particular Dept; and I think a commission should be sent out to examine, and their report should be received as authority on the subject. It would government. I would not like to be governed entirely by my own particular opinions, for in information is not so extened as I should desire to have it in order to feel that I am perfectl informed.