Bigelow, C. J.
The main defence to this action appears to have been that the contracts or agreements on which the plaintiffs rely in support of their claim against the defendants were such that the latter had no power or authority to make them under the act of the legislature by which they were incorporated, and that they cannot for that reason be enforced in a court of law. The later English authorities seem to sanction the doctrine that such a ground of defence, although it may be “ unbecoming and ungracious,” or, in the stronger language of Lord St. Leonards, “ indecent,” is nevertheless legal and valid, if it be made to appear, either by the express provisions of an act of incorporation or by necessary and reasonable implication therefrom, that a contract which is sought to be enforced in an action at law against a corporation is beyond the scope of the powers granted by its charter; or, in other words, that the legislature did not intend that the body created by them should enter into contracts of a character like that which a plaintiff makes the foundation of a claim against it. South Yorkshire Railway, &c. v. Great Northern Railway, 9 Exch. 55, 85. Bateman v. Ashtonunder-Lyne, 3 Hurlst. & Norm. 323. Norwich v. Norfolk Railway, 4 El. & Bl. 397, and cases cited. Hawkes v. Eastern Counties Railway, 1 De G., Macn. & Gord. 737, 760. A similar doctrine has been recognized and applied by courts in this counry. Pennsylvania, &c. Steam Navigation Co. v. Dandridge, 8 Gill & J. 248. Hood v. New York & New Haven Railroad, 22 Conn. 502. Pearce v. Madison, &c. Railroad, 21 How. 441. Angelí & Ames on Corp. § 256, and cases cited. It is on the principle which seems to be adopted by these authorities that the defendants rely to defeat the present action.
We have no occasion now to examine at length into the correctness of this doctrine, or to ascertain with precision its proper limitations or operation, because we are of opinion that the defendants do not bring the case at bar within any recognized *332application of the rule. Looking only at the words of the act by which the defendants were incorporated, St. 1833, e. 197, we are unable to say that the contracts on which the plaintiffs rely are so far foreign to the object for which a charter was granted to the defendants as to require us to declare them to have been ultra vires and illegal, and that no action upon them can be maintained in a court of law. In the absence of all evidence of extraneous facts, and taking the case as it was presented at the trial, on a comparison of the contracts set up by the plaintiffs with the act incorporating the defendants, it appears to us that the scrupulous care and anxiety to keep within the limit of their corporate powers, which the defendants now manifest will not avail them in defence of this action, although it may induce them to exercise a greater caution in entering into contracts which they cannot fulfil without violating their charter. They were incorporated with power to establish, continue and maintain a ferry between the city of Boston and the town of Chelsea, and were authorized to own, hold and possess vessels, steamboats and such other personal property, not exceeding in value one hundred thousand dollars, as might be necessary and convenient for the better management of such ferry and of the affairs of said corporation. There can be no doubt that under this charter the main purpose for which the defendants were incorporated was to carry on the transportation of persons, vehicles, merchandise and other articles by means of a ferry across Charles Fiver between the points designated in the act. All else was to be subordinate and incidental to this main design. So far, the argument urged in behalf of the defendants is sound and irrefragable.
But the next step is not so easily taken, nor does it lead to the point at which the defendants seek to arrive. It was not shown at the trial that the steamboat which was the subject of the contracts with the plaintiffs was not a necessary and proper vessel to be used by the defendants in the prosecution of the business of their terry, nor that by reason of its ownership they had exceeded the limit of personal property which they were empowered by their charter to hold. Nor could it be *333properly inferred that it was not reasonably required for the legitimate business of the corporation, because it was not in actual use by them on the ferry at the time the contract for letting it was entered into with the plaintiffs, and because it was chartered under that contract for the use of the government of the United States. Such an inference could be made only on the theory that the defendants were so restricted by their charter that they could not hold any greater number of vessels or steamboats than were absolutely required for present or immediate and constant use on their ferry, or, if they could be allowed to possess a larger number, that they could not use or employ them in any other business or for any other purpose whatever, but must suffer them to remain at their wharf to decay or deteriorate for the want of use, or, at least, in a condition in which they could be of no advantage to themselves or others. But we think such a narrow and restricted construction of the powers granted to the defendants is inconsistent with any reasonable view of the intention of the legislature in conferring on them a corporate franchise, and is not required by any considerations of justice or sound policy. On the contrary, we cannot doubt that under their charter they are authorized to hold any amount or kind of personal property, within the limit of value fixed by the act, which they may deem necessary or expedient for the proper conduct and management of the business of the ferry; that it is no excess of their corporate powers to own steamboats which are not required for immediate or constant use in the daily prosecution of their ordinary business, but which may be convenient or useful in case of sudden emergency or accident, or when those which are employed in the regular service of the ferry might be withdrawn for repairs ; that it is not necessary that such extra or additional steamboats should be kept unemployed when not required for the business of the ferry, but that it is competent for the defendants to use them or to let them to others to be used in carrying on any legitimate business for which they are suitable, such as the towage oí vessels ana the transportation of passengers or merchandise, so long as such use is only temporary and incidental to the main purpose for which they are owned by the defendants.
*334We know of no rule or- principle by which an act creating a corporation for certain specific objects or to carry on a particular trade or business is to be strictly construed, as prohibitory of all other dealings or transactions, not coming within the exact scope of those designated. Undoubtedly the main business of a corporation is tc be confined to that class of operations which properly appertain to the general purposes for which its charter was granted. But it may also enter into contracts and engage in transactions which are incidental or auxiliary to its main business, or which may become necessary, expedient or profitable in the care and management of the property which it is authorized to hold under the act by which it was created. For example, it might perhaps be held that a corporation established for the purpose of manufacturing cotton and woollen cloth could not properly invest all its capital in mill powers and privileges, and engage exclusively in the business of leasing them to others to be used for manufacturing purposes, or that it could not lawfully confine its operations to the making of steam-engines and machines for sale. But no one could doubt that it would be within the scope of its powers to allow another person or corporation, for a reasonable compensation, to draw surplus water from its mill-pond, or to employ that portion of its steam power which was not required for its own use. So a stage-coach company or a street railway corporation would -exceed its corporate powers if it engaged extensively in the transportation of passengers and merchandise on land or sea by steam; but it would be acting strictly within the limits of its capacity if it should occasionally let a horse or a coach or car, not required for its own immediate purposes, to another person or corporation, or should enter into a contract for the employment of its horses in another occupation during a portion of the year when the business of the corporation did not require their use. We can see no substantial difference between transactions of this character and that which the defendants entered into when they made the contracts with the plaintiffs.
These views of the extent of the authority granted to the defendants by the legislature are a decisive answer to the defence *335relied on by them at the trial. The steamboat, under the contract with the plaintiffs, was let to the United States in a season of great public exigency, for military purposes ; the defendants did not part with her control for any definite period of time, but only from day to day, nor did they send her to a great distance, where she could not be speedily recalled. The defendants retained the right and power to resume the possession and use of her at any moment. In this state of facts, we are of opinion that the court below took a correct view of the law, and was right in refusing to rule, as requested by the defendants, that the contracts entered into with the plaintiffs were not authorized by the defendants’ charter, and were therefore void.
It was further objected on the part of the defendants, at the trial, that the evidence was insufficient to show that the treasurer of the corporation was authorized to enter into the agreement set up by the plaintiffs as the foundation of their claim, or that the agreement had been so ratified by the defendants as to be binding on them. On this point, the ruling of the court was sufficiently favorable to the defendants. The evidence of ratification was plenary, and well authorized the jury in finding the fact. Not only did the defendants allow the steamboat to continue in the employment of the United States for upwards of seven weeks, under the contracts made with the plaintiffs, without dissent or objection, but it is expressly found that the money under the charter party “ was collected by the defendants and duly entered on their books,” and that this money was collected by the defendants from the government under an agreement .with the plaintiffs. It is difficult to see how a ratification could be more satisfactorily shown.
It was suggested at the argument that the contract between the parties for letting the steamboat to the United States was against public policy, and for that reason one under which the plaintiffs could not claim to recover. No such point seems to have been raised at the trial or ruled upon by the court. It is not, therefore, open on the exceptions. But we feel bound to say that we see no ground in the facts stated for any such assumption. It does not appear that the steamboat was let to the *336government at an exorbitant price, or that any undue advantage was taken of the public officers or agents, in making the charter. We cannot in the absence of proof judicially infer that such was the fact.
Exceptions overruled.