of the decree below, as if the reasons only had been changed with the decision standing firm. Alike in substance and in form there was a modification of the decree itself, the facts being found anew and differently, the law declared anew and differently, and the relief remodeled and adapted to the new law and the new facts. Without a cross-appeal, an appellee may “urge in support of a decree any matter appearing in the record although his argument may involve an attack upon the reasoning of the lower court or an insistence upon matter overlooked or ignored by it.” United States v. American Railway Express Co., 265 U. S. 425, 435. What he may not do in the absence of a cross-appeal is to “attack the decree with a view either to enlarging his own rights thereunder or of lessening the rights of his adversary, whether what he seeks is to correct an error or to supplement the decree with respect to a matter not dealt with below.” Ibid. The rule is inveterate and certain. Canter v. American Insurance Co., 3 Pet. 307, 318; Chittenden v. Brewster, 2 Wall. 191, 196; The Maria Martin, 12 Wall. 31, 40, 41; Field v. Barber Asphalt Co., 194 U. S. 618, 621; Landram v. Jordan, 203 U. S. 56, 62; Union Tool Co. v. Wilson, 259 U. S. 107, 111; Peoria & Pekin Union Ry. Co. v. United States, 263 U. S. 528, 536; Langnes v. Green, 282 U. S. 531, 538; Alexander v. Cosden Co., 290 U. S. 484, 487. Findings may be revised at the instance of an appellant, if they are against the weight of evidence, where the case is one in equity. This does not mean that they are subject to like revision in behalf of appellees, at all events in circumstances where a revision of the findings carries with it as an incident a revision of the judgment. There is no need at this time to fix the limits of the rule more sharply. “Where each party appeals each may assign error, but where only one party appeals the other is bound by the decree in the court below, and he cannot assign error in the