515, 25 South. 363. —Collateral dmpeachment. A_ collateral impeachment of a judgment or decree is an attempt made to destroy or evade its effect as an estoppel, by reopening the merits of the cause or by showing reasons why the peement should not have been rendered or should not have 8 conclusive effect, in a collateral proceeding, #. e., in any action other than that in which the judgment was rendered; for, if this be done upon appeal, error, or certiorari, the impeachment is derect. Burke v. Loan Ass’n, 25 Mont. $15, 64 Pac. 881, 87 Am. St. Rep. 416; Crawford v. McDonald, 88 Tex. 626, 33 S. W. 325; Morrill v. Morrill, 20 Or. 96, 25 Pac. 362, 11 L. R.