eez'ment, a right of use or enjoyment of lands belonging to another which one may possess through ownership or possession of other lands. Such are rights of way, the right of light, the right of drainage. Common law classifies easements as positive, or affirmative, and negative. The former refers to the right of physical use of another's land, as a right of way, while the latter requires no such physical use, as the right of light. If an easement is infringed or destroyed, the responsible party is guilty of a nuisance, and this may be abated by legal action or by the act of the person injured. If the offense does not amount to a nuisance, the offending party may be punished for trespass, while if the infringement is only threatened, an injunction may be issued to restrain the acts. Easements may arise either by grant, by prescription, that is, by immemorial usage, or by implication. The last-named arises from the natural presumption that the parties intend to convey such an easement at the time that the land is conveyed. Such an easement would be what is known as a way of necessity, that is, the right of ingress and egress to lands that are shut off on all sides.