Income of trusts or institutions from contributions
19 12. Any voluntary contributions received by a trust created wholly for charitable or religious purposes or by an institution established wholly for such purposes (not being contributions made with a specific direction that they shall form part of the corpus of the trust or institution) shall for the purposes of section 11 be deemed to be income derived from property held under trust wholly for charitable or religious purposes and the provisions of that section and section 13 shall apply accordingly.]