4 Where heirs take by purchase under limitations to the heirs of their ancestor, the land shall descend as if the ancestor had been the purchaser.U.K.

When any person shall have acquired any land by purchase under a limitation to the heirs or to the heirs of the body of any of his ancestors, contained in an assurance executed after the said thirty-first day of December one thousand eight hundred and thirty-three, or under a limitation to the heirs or to the heirs of the body of any of his ancestors, or under any limitation having the same effect, contained in a will of any testator who shall depart this life after the said thirty-first day of December one thousand eight hundred and thirty-three, then and in any of such cases such land shall descend and the descent thereof shall be traced as if the ancestor named in such limitation had been the purchaser of such land.