Estates, as respects the time of their enjoyment, are divided into estates in possession, and estates in expectancy.
R.S. 1846, Ch. 62 ;--CL 1857, 2591 ;--CL 1871, 4074 ;--How. 5523 ;--CL 1897, 8789 ;--CL 1915, 11525 ;--CL 1929, 12927 ;--CL 1948, 554.7.