(2) Where co-owners of any immovable property not being itself partnership property, are partners as to profits made by the use of that land or estate, and purchase other land or estate out of the profits to be used in like manner, the land or estate so purchased belongs to them, in the absence of an agreement to the contrary, not as partners, but as co-owners for the same respective estates and interests as are held by them in the land or estate first mentioned at the date of the purchase.