applied, may have a patent for the exclusive right to that application? and may exclude all others, under penalties, from so using their hoe, spade, or axe? If this be the meaning, my opinion that the legislature never meant by the patent law to sweep away so extensively the rights of their constituents, to environ everything they touch with snares, is expressed in the letter of August 13, from which I have nothing to retract, nor ought to add but the observation that if a new application of our old machines be a ground of monopoly, the patent law will take from us much more good than it will give. Perhaps it may mean another thing, that while every one has a right to the distinct and separate use of the buckets, the screw, the hopper-boy, in their old forms, the patent gives you the exclusive right to combine their uses on the same object. But if we have a right to use three things separately, I see nothing in reason, or in the patent law, which forbids our using them all together. A man has a right to use a saw, an axe, a plane separately; may he not combine their uses on the same piece of wood? He has a right to use his knife to cut his meat, a fork to hold it; may a patentee take from him the right to combine their use on the same subject? Such a law, instead of enlarging our conveniences, as was intended, would most fearfully abridge them, and crowd us by monopolies out of the use of the things we have. I have no particular interest, however, in these questions, nor any inclination to be the advocate of either party; and I hope I shall be excused from it. I shall acquiesce cheerfully in the decisions in your favor by those to whom the laws have confided them, without blaming the other party for being unwilling, when so new a branch of science has been recently engrafted on our jurisprudence, one with which its professors have till now had no call to make themselves acquainted, one bearing little analogy to their professional educations or pursuits. That they should be unwilling, I say, to admit that one or two decisions, before inferior and local tribunals, before the questions shall have been repeatedly and maturely examined in all their bearings, before the cases shall have presented themselves in all their forms and attitudes, before a sanction by the greater part of the judges on the most solemn investigations, and before the industry and intelligence of many defendants may have excited to efforts for the vindication of the general rights of the citizen; that one or other of the precedents should forever foreclose the whole of a new subject. To the publication of this answer with your letter, as you request, I have no objection. I wish right to be done to all parties, and to yourself, particularly and personally, the just rewards of genius; and I tender you the assurances of my great esteem and respect. TO JOSEPH C. CABELL, ESQ. MONTICELLO, January 17, 1814.