Exhibit 23.1
CONSENT OF COUNSEL
We hereby consent to the reference to us in the Prospectus constituting part of this Post-Effective Amendment No. 1 to the Registration Statement on Form S-1, under the captions “The Risks You Face – (23) Shareholders of Each Fund Will Be Subject to Taxation on Their Share of the Corresponding Master Fund’s Taxable Income, Whether or Not They Receive Cash Distributions; (24) Items of Income, Gain, Deduction, Loss and Credit with respect to Shares of a Fund could be Reallocated if the IRS does not Accept the Assumptions or Conventions Used by its Corresponding Master Fund in Allocating Master Fund Tax Items; and (25) The Current Treatment of Long-Term Capital Gains Under Current U.S. Federal Income Tax Law May Be Adversely Affected, Changed or Repealed in the Future,” “Material U.S. Federal Income Tax Considerations” and “Legal Matters.”
| New York, New York | /s/ Sidley Austin LLP | |||||
| October 5, 2007 | Sidley Austin LLP |
