Exhibit (q)(3)

                          IXIS ADVISOR FUNDS TRUST I
                          IXIS ADVISOR FUNDS TRUST II
                         IXIS ADVISOR FUNDS TRUST III
                          IXIS ADVISOR FUNDS TRUST IV
                      IXIS ADVISOR CASH MANAGEMENT TRUST
                             LOOMIS SAYLES FUNDS I
                            LOOMIS SAYLES FUNDS II

                               POWER OF ATTORNEY

   I, the undersigned, hereby constitute John M. Loder, Coleen Downs Dinneen,
Russell Kane and Michael Kardok, each of them singly, our true and lawful
attorneys, with full power to them and each of them to sign for us, and in our
names in the capacity indicated below, any and all registration statements and
any and all amendments thereto to be filed with the Securities and Exchange
Commission for the purpose of registering from time to time investment
companies of which we are now or hereafter will be a Director or Trustee and to
register the shares of such companies and generally to do all such things in
our names and on our behalf to enable such registered investment companies to
comply with the provisions of the Securities Act of 1933, as amended, and the
Investment Company Act of 1940, as amended, and all requirements and
regulations of the Securities and Exchange Commission, hereby ratifying and
confirming our signatures as they may be signed by our said attorneys and any
and all registration statements and amendments thereto.

   Witness our hands on the 25th day of April, 2007.

/s/ Jonathan P. Mason
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Jonathan P. Mason - Trustee