Mr. Dana, said that the question now before the House did not relate to any degree of reputation which any individual might claim for any invention, nor to any interest he might have in any discovery he had made. The question was, whether this proposition now appeared before the House under such circumstances that they should step out of the ordinary course of encouragement, given by law to inventors, to provide the means of making an experiment at the public expense. This, Mr. D. said, was the simple inquiry to be made; and, however eminent or distinguished in the walks of science, or however irradiated by the splendor of genius, it belonged to no individual to demand of the Legislature that they should adopt any system previous to its utility being ascertained. No individual could arrogate it to himself; and, when any individual pressed himself upon the Legislature, it was a question whether this experiment was worthy to be made; whether the invention promised any possible good worthy of this experiment.
Mr. D. said he had no wish to detain the House, but he had really doubted, for himself, whether, with the views he entertained on this subject, it was compatible with the respect due to the House to withhold some of the sentiments which occurred to him in opposition to this bill. In every instance in which a sum of money had heretofore been appropriated to encourage inventions, it had been for some object admitted to be of value, for something intended to be of use, and which, prior to making the appropriation in relation to it, had been, in a degree, examined. This, however, was a thing which, on the face of it, appropriated a sum of money for the purpose of making experiments to ascertain the use of the invention. It was therefore, perhaps, the first appropriation of the kind ever proposed.
Mr. D. said he did not perceive that any experiment could be made, in time of peace, to ascertain this thing, so as to decide the question of the practical use of the torpedo; for, with respect to every question stated in the publication laid on the table, with respect to any principle which the inventor proposed to establish by any specific experiment, with respect to any question which related to natural agents or their physical effect, he thought it proper to admit the whole.
In the first place, Mr. D. said that he admitted that the explosive force of gunpowder, placed at the keel, might destroy any ship. Another thing he would admit, that a person might deposit powder in a metallic case, which should remain under water; that the case might be made water-tight, and that the clock-work contained in it might be put in motion. He would admit, also, that this machine might be balanced so that its gravity should be nearly equal to that of the water; that the action of the current or tide might bear such a magazine, so specifically apportioned, beneath the bottom of the vessel.
But, when all these things were admitted, Mr. Dana said that he did not perceive that any one point was gained as respected the object of the experiment, for it must be considered that all this experiment could only go to decide the action of natural physical powers, where the efforts of genius were not combined.
As respects the whole of the thing itself, as far as I understand it, I perceive nothing new in it. I do not conceive that, on this subject, there is any thing very novel in point of principle. There may be something in the modification of it; but, as respects the main principle, there is nothing new. The idea was started during the war of the American Revolution, and various experiments were made on it. The Commander-in-Chief of the Army of the United States, at that time, was not, as I have understood, impressed himself with much confidence in the experiment. But a gentleman of his family, and an officer of his army, who had more confidence in it, made the experiment; and, ultimately, the experiment was pretty much given up.
As he did not speak at random, Mr. D. asked leave to call the attention of the House to the principles of the invention of David Bushnell, of Connecticut. [Mr. D. here read, from the Philosophical Transactions, an account of a machine invented by Mr. Bushnell, in many respects similar to that invented by Mr. Fulton.]
The principal difference between these two inventions, Mr. D. said, appeared to be in the mode of conveying the machine to the keel of the ship. The plan of Mr. Fulton was, instead of conveying it by means of a diving-boat, to convey it by the action of the current to the place where it was to operate. To do this he proposed two modes. As respected the first, the action of the current on the torpedo placed obliquely, Mr. D. said he had no doubt. It was the principle on which the helmsman steers his ship, and the seaman manages his sails; the principle on which boats are made to pass ferries by the oblique action of the current. As respected the second mode, the use of the harpoon-gun, there was no novelty in that certainly. It had been used in Europe in the whale fishery, where they were not trained in this species of fishing so as to produce dexterity in throwing the harpoon. Premiums had been given, and attempts made to discharge a harpoon from a ring and rope attached to it, at the distance of ten fathoms, which was a greater distance than the most experienced and skilful could strike with effect.
The question which Mr. D. said he proposed, was, whether obstacles could not be interposed by naval men. As respected firing the harpoon-gun, he should suppose it a want of skill or attention in the experiment if it failed to take effect. That a harpoon might be fired into a vessel, that the torpedo would go under her, and that a vessel which could be bought for $5,000, might be blown up in this way, he had no doubt; but when all this is done, what does it ascertain? As respects making a torpedo, any person who is in the neighborhood of a good gun and locksmith, and has good powder, can construct one. Mr. D. said he did not see the necessity of spending this sum of money rather for amusement than for any thing else. He did not see the necessity of it, because he did not perceive any one thing to be learnt from an experiment. He was, therefore, against the bill.