Jackson held that notice must be "reasonably calculated" to inform known parties affected by the proceedings. Thus, §100-c(12), the section of the statute which dealt with notice to beneficiaries, was unconstitutional. He further held that notice by publication was acceptable for missing or unknown parties, for those whose whereabouts could not be ascertained by due diligence, and for those whose future interests were too conjectural to be known with any certainty. However, Jackson noted that in many cases, notice to the known parties would help the information of the proceedings to reach those who were unknown by the trustee.