Clause (1) of subsection a of section 64 of the Bankruptcy Act (11 U.S.C. 104(a)(1)) is amended to read as follows: 66 Stat. 426. (1) the costs and expenses of administration, including the order of payactual and necessary costs and expenses of preserving the estate 'ent*. subsequent to filing the petition; the fees for the referees' salary and expense fund; the f