“In case it shall happen that neither of my said daughters shall leave a child or children, or issue of the bodies of such child or children, or in case of such child or children, or issue of their bodies existing, but all dying before attaining the age of twenty one years of age, then, and in these events, full power and faculty is hereby committed to my said daughters respectively, to settle, destine, and convey the fee of the share of the residue of my estate, liferented by them respectively, to such person or persons, and in such way or manner as they may think fit; but under burden always of the survivor's liferent; and failing my said daughters, or either of them, exercising such power and faculty, then the fee of the said share or shares shall go and belong, in equal proportions, to my brothers, William and Morris Pollok, and my sister, Susan Pollok, and their respective heirs,”
“Full power and faculty is hereby committed to my said daughters respectively, to settle, destine, and convey the fee of the share of the residue of my estate, liferented by them respectively.”