Charitable trusts differ from private trusts, in the first place, in the fact that they are favored by the courts in the construction of instruments creating them, and less certainty of description in designating the purpose of the trust and the persons intended to be benefited is permitted.149 This must necessarily be the case, for those who are to be the cestuis que trustent are generally unknown, and incapable of being pointed out specifically;150 for instance, in a trust for the benefit of the "poor" of a certain county.151

Perpetuities and Accumulations.

Although it is often said that charitable trusts are not within the rule against perpetuities, this is true, however, only in the case stated in the black letter.152 The subject will be discussed later, in considering perpetuities,153 as will also the application of the rule against accumulations.154