We can see nothing in the facts disclosed at the trial, which shows any misrepresentation or concealment in procuring the assent of the defendant to the contract of sale set out in the declaration. Assuming the rule of law to be, as stated by the counsel for the defendant, that a contract, made by an agent in behalf of a vendee, his principal, into which the vendor was induced to enter by a representation, which was false within the knowledge of the principal, but not so within that of the agent, would be void on the ground of fraud, we do not think the evidence brings the case at bar within this principle. The broker did not make any representation or statement in behalf of the plaintiffs or as their agent. He was not asked concerning their knowledge of any fact or circumstance bearing on the contract which he was endeavoring to negotiate with the defendant. It is true that he was interrogated concerning a material fact, but the question was addressed to him individually and sought to draw out only his own personal knowledge, and not that of his principals upon the subject to which it related. Clearly it was so understood between the parties. The answer given to it, which the defendant received at the time as satisfactory, was expressly confined to the broker’s own indi*442vidual information, and did not either affirm or deny any fact absolutely, or import, either directly or by implication, any knowledge of it on the part of the plaintiffs. This answer was strictly true, and did not tend in any degree to deceive or mislead the defendant. It is not a case, therefore, where an agent made any absolute representation of a material fact which he believed to be true, though it was in fact false and known to be so by his principals. Such would have been the aspect of the case, if he had stated to the defendant, in answer to his inquiry, that the steamer which had that day arrived in New York had brought no intelligence of any advance in copper. Then the cases in which the authority of Cornfoot v. Fowke, 6 M. & W. 358, has been questioned and denied, would have been applicable. Fuller v. Wilson, 2 Gale & Dav. 460; 3 Gale & Dav. 570; 3 Ad. & Bl. N. R. 58, 68,1009. Fitzsimmons v. Joslin, 21 Verm. 129. But, as the case stands, upon the proof there was no affirmation or denial by the agent of the existence of this fact or even of the knowledge of his principals concerning it. There was nothing more than a statement that no such fact was known to him. This is admitted to have been true; clearly then there was no misrepresentation or concealment by which the contract can be avoided.
There can be no doubt that the broker, if he acted as the agent of both parties in completing the contract of sale, was empowered to do all that was necessary to make the bargain valid and binding in law. For this purpose he had authority to make the requisite memorandum to satisfy the statute of frauds. Rev. Sts. c. 74, § 4. It is not denied that this memorandum may well be made in the book of a broker. Indeed, such entry may be resorted to as the original evidence of the contract, even when bought and sold notes of the bargain, differing from each other, have been delivered to the parties. Sievewright v. Archibald, 17 Ad. & Bl. N. R. 102, 109.
But it is objected that the memorandum made by the broker in the present case was insufficient to take the case out of the operation of the statute, because it does not show who were the vendor and vendee of the merchandise. This would be a *443fatal objection if it was well founded; for although a memorandum of this nature may be very brief, it must nevertheless show with reasonable certainty who were the parties to the contract, and the terms of the sale, so that they may appear from the writing itself. But in the present case the entry is perfectly intelligible and free from doubt. If it is read with reference to the book in which it is made, as an entry by a broker in the regular course of his business as an agent of third parties for the purchase and sale of goods, it clearly indicates a sale from defendant to the plaintiffs. It is susceptible of no other interpretation.
It is also objected that the memorandum is deficient, because it does not state the amount for which insurance was to be procured, nor for whose benefit, and because it contains no stipulation concerning the mode or place in which the assaying of the copper was to be had, in order to ascertain its purity. The answer to these objections is that the memorandum states with accuracy the terms of the contract as testified to by the broker, and that there was no proof at the trial that there was any agreement made concerning the particulars of the bargain which are now alleged to be omitted.
Nor does it affect the validity of the memorandum, that the broker did not include in it the stipulation made by the defendant, that he should have the right to add to the sale one hundred thousand pounds of copper the next day. This was a wholly separate and independent agreement, which in no way affected the sale actually made, and which could not be properly entered in the book of the broker, unless it had ripened into a sale by the election of the defendant on the next day to sell the additional quantity to the plaintiffs. But he made no such election, and there was therefore no contract as to that portion of the copper of which the broker was empowered to make a memorandum.
The remaining objection to the sufficiency of the entry in the book as a memorandum within the statute is that it was not duly signed by the broker or the parties. We know of no case in which it has been held that the signature of the name *444of the agent through whom the contract is negotiated should appear in the writing. It is sufficient if the names of the parties to be charged are properly inserted, either by themselves or by some persons duly authorized to authenticate the document. Brokers and auctioneers are deemed to be the agents of both parties, and by virtue of their employment stand in such relation to their principals that they can sign the names of the parties to a contract of sale effected through their agency. Such authority is implied from the necessity of the case; because without it they could not complete a contract of sale so as to make it legally binding on the parties. Nor is it at all material that the names should be written at the bottom of the memorandum. It is sufficient if the names of the principals are inserted in such form and manner as to indicate that it is their contract, by which one agrees to sell and the other to buy the goods or merchandise specified, upon the terms therein expressed. It is the substance, and not the form, of the memorandum, which the law regards. The great purpose of the statute is answered, if the names of the parties and the terms of the contract of sale are authenticated by written evidence, and do not rest in parol proof. Penniman v. Hartshorn, 13 Mass. 87. Hawkins v. Chace, 19 Pick. 502, 505. Fessenden v. Mussey, 11 Cush. 127. Morton v. Dean, 13 Met. 385. Salmon Falls Manuf. Co. v. Goddard.114 How. 446.
The only other exception taken to the ruling of the court presents a question of some difficulty. To understand it, it is necessary to recur to the positions assumed by the respective parties at the trial. The plaintiffs contended and offered evidence to show that the sale was an absolute one, and was made upon the terms set out in the written memorandum. The defendant, on the other hand, insisted and endeavored to prove that the contract of sale was a conditional one, and was not to take effect, if intelligence had been received by the steamer of an advance in the price of copper, nor unless the plaintiffs should agree to export it, if the sale and delivery were completed. In this state of the ease, one of the points urged by the defendant was that the broker had no authority to bind him by the memo*445randum, which was offered in evidence. Among the instructions given to the jury, they were told that if the defendant did, in his verbal contract entered into with Canterbury, make the sale on the conditions above stated, he could not avail himself of either of them, because they were not contained in the written memorandum made by the broker. This instruction was strictly accurate as applied to the contract, if it was made by the authorized agent of both the parties. But upon the issue whether the broker was authorized to sign the memorandum offered in proof as the agent of the defendant, it shuts him out from the benefit of testimony which has a direct and material bearing. Upon the facts as they appear in the report of the case, the broker was not the general agent of the defendant. He had no authority to bind him, except such as was derived from the verbal contract into which he entered for the sale of the copper. He was in the strictest sense a special agent for a special and single object, and could not bind the defendant beyond the limits conferred by the precise terms of the agreement to which he assented. He was his agent only to sign a memorandum which contained the whole contract, ■with the terms and conditions annexed to it by him. A broker, from the very nature of his employment, has only a limited authority, when it appears, as it does in the present case, that •he had no relation to a party, other than what is derived from a single contract of sale. When he applies to a vendor to negotiate a sale, he is not his agent. He does not become so until the vendor enters into the agreement of sale. It is from this agreement that he derives his authority, and it must necessarily be limited by its terms and conditions. He is then the special agent of the vendor to act in conformity with the contract to which his principal has agreed, but no further, and he cannot be regarded as his agent, unless he complies with the terms of his special authority as derived from the contract. In short, a broker is authorized to sign only that contract into which the vendor has entered, not another and different contract. If he omits to include in the memorandum special exceptions and conditions to the bargain, he signs a contract which he has no *446authority to make, and the party relying upon it must fail, because it is shown that the broker was not the agent of the vendor to sign that contract. It would seem to follow as a necessary consequence that evidence of the verbal agreement into which the defendant entered for the sale of the copper was competent and material on the question of the extent of his authority to bind the defendant.
*446Nor does the admission of this evidence for this purpose at all contravene the rule, that parol proof is incompetent to vary or control a written contract. It is offered for a wholly different purpose. It bears solely on a preliminary inquiry. The object is not to explain or alter a contract, but to show that no contract was ever entered into, because the person who executed it had no authority to make it. The authority of an agent may always be shown by parol; but the contracts into which he enters within the scope of his authority, when reduced to writing, can be proved only by the writing itself.
The necessity of admitting evidence of the verbal contract entered into with a broker, in cases where his authority is drawn in question, is quite obvious. If such proof were incompetent, a broker who had entered into negotiations with a person might make a memorandum of a contract wholly different from that which he was authorized to sign, and thereby effectually preclude all proof that no such contract was ever made. Allen v. Pink, 4 M. & W. 144. Pitts v. Beckett, 13 M. & W. 743,750.
New trial granted.
H. W. Paine, (Peabody with him,) for the defendant. E. D. Solder, (Bangs with him,) for the plaintiffs. Chapman, J.*The fact that at the time of making the con-
tract there was a general expectation that the next steamer would bring news of a rise in the price of copper in Europe would not be pertinent to the case, if true ; and the evidence was properly excluded. This is too plain to require discussion.
The question at issue at the trial was whether Canterbury, the broker, had authority to make such a memorandum as he did. It depended on oral testimony, and was therefore a question to be decided by the jury, under instructions from the court. Upon the bill of exceptions, the question is not whether the finding of the jury was against the evidence, or the weight of the evidence, for such a question can only be raised by motion for a new trial; but it is whether the jury were properly instructed. The court are of opinion that the instructions were correct. They embrace the substance of what the defendant asked, in case the jury should find the facts as supposed by him; *448they state the law correctly, in case the jury should find the facts as contended for by the plaintiffs; and they .properly leave it to the jury to find what the agreement actually was in respect to the point in controversy. It was a question for the jury, and not for the court. Exceptions overruled.
Hoar, J. did not sit in this case