Section 15 — T r ansf er t o cl as s s ome of who m co me unde r s ect i ons 13 and 14

If, on a transfer of property, an interest therein is created for the benefit of a class of persons with regard to some of whom such interest fails by reason of any of the rules contained in sections 13 and 14; suchinterest fails 1[in regard to those persons only and not in regard to the whole class].