One which is not yet in possession, but the enjoyment of which is to begin at a future time; a present or vested contingent right of future enjoyment. These are remainders and reversions. Fenton v. Miller, 108 Mich. 246, 65 N. W. 966; In re Mericlo, 63 How. Prac. (N. Y.) 66; Greyston v. Clark, 41 Hun (N. Y.) 130; Ayers v. Trust Co., 187 111. 42, 58 N. E. 318.