Reserving. In old conveyancing. An apt word of reserving a Co. Litt. 47a. rent. Reservatio non debet esse de proficuis ipsis, quia ea conceduntur, sed de reditu novo extra proficua. A reservation ought not to be of the profits themselves, because they are granted, but from the new rent, apart from the profits. Co. Litt. 142. grant, and cuts down and lessens the grant from what it would be except for the reservation. 44 Vt. 416. A "reservation" should be carefully distin- guished from an "exception," the difference be tween the two being this: By an exception, the grantor withdraws from the effect of the grant some part of the thing itself which is in esse, and included under the terms of the grant, as one acre from a certain field, a shop or mill standing within the limits of the granted premises, and the like; whereas, a reservation, though made to the gran- thing arising out of the thing granted not then in tor, lessor, or the one creating the estate, is some- esse, or some new thing created or reserved, issu- ing or coming out of the thing granted, and not a part of the thing itself, nor of anything issuing out of another thing. 3 Washb. Real Prop. 645. In public land laws of the United States, a reservation is a tract of land, more or less considerable in extent, which is by public authority withdrawn from sale or settle- ment, and appropriated to specific public uses; such as parks, military posts, Indian lands, etc. In practice, the reservation of a point of law is the act of the trial court in setting it aside for future consideration, allowing the trial to proceed meanwhile as if the question had been settled one way, but subject to alteration of the judgment in case the court in banc should decide it differently.