William O. Douglas,
De Beers Consol Mines v. United States…
“ Thus, Congress limited the right of review to an appeal from the decree which disposed of all matters, see Collins v. Miller, 252 U.S. 364, 40 S.Ct. 347, 64 L.Ed. 616; and it precluded the possibility of an appeal to either court from an interlocutory decree.'To allow this appeal is to defeat that policy. Long ago in Bank of Columbia v. Sweeney, 1 Pet. 567, 569, 7 L.Ed. 265, Chief Justice Marshall stated that an allowance of an appeal from an interlocutory ruling where Congress permitted an appeal only from a final judgment would be a 'plain evasion' of the Act of Congress. ”
