82. Class attaining twenty-one.

A limitation can be well made to such of the unborn children of a living person as attain 211. This limitation may be extended to include in the class the children of any child who should die under 21 leaving issue at death2, so that their interests would arise at birth, and all the shares would necessarily be ascertained within due limits of time. This further addition of grandchildren cannot, however, be made when the grandchildren are only to take if they attain 21, so that the condition of attaining that age is to apply to both children and