Per Curiam,
Mason, Chief Justice.The only question to be decided in this case is whether the act of January 25, 1839 is valid so far as to authorize one person who has a claim on the public lands marked out and designated in accordance with that act, but not enclosed with a fence, to maintain an aclion of trespass against other persons for cutting timber thereon. We think the legislature in passing that act have not transcended their legitimate powers.
Before the enactment of that statute any person who had enclosed a portion of the public lands with a fence might maintain this action for trespasses within such enclosure. The legislature have declared that, the ■marking out of the grounds in the manner provided for in the act, should be equivalent to an actual enclosure. They have merely changed the definition of the term constructive possession, or rather they have merely modified the circumstances under which this action would lie between one citizen and another. To deny them this power would be to restrict their authority to narrow limits indeed—much narrower than wc are prepared to sanction.
It is said that this law interferes with the primary disposal of the soil. Whenever the case arises in which it has such an effect it will be time to resort to this argument. We cannot perceive that it has had this effect in the present instance. Even supposing an action brought against a person for" riding over the public lands in search of a desirable location of a farm which he was designing to purchase from the United States, is the argument any stronger against this law than against the *385well established and unquestionable rule, that an enclosure gives the right to maintain trespass ? If, a person in search of lands to enter, passes within an enclosure on the public domain, is he liable as a trespasser? No, for there can be no law made either by legislative enactment or judicial construction which shall interfere with the primary disposal of the soil. The same rule and for a like reason would apply to the case of a person for riding across public land marked out in pursuance of the statute v/e have been considering.
Counsel sometimes overlook the fact that a statute may be valid as to some purposes and illegal as to others. Whenever the act of 1839 is attempted to be used for interfering with the primary disposal of the soil, it is impotent, in other cases omnipotent. The case now under consideration is of the latter class.
Judgment affirmed.