Plaintiffs sued for property damages caused in Auist, 1977, by a field burning fire in Linn County that scaped from defendant’s land, crossed adjoining propty and spread onto plaintiffs’ land. On the day of ial plaintiffs amended their pleadings to add a cause action based on strict liability and also submitted a ipplemental complaint pleading collateral estoppel ising out of a previous lawsuit. The trial court ac-pted those pleadings over objection by defendant as their timeliness. The court found that defendant’s rict liability was conclusively determined in the ior litigation, and it directed a verdict for plaintiffs, íe jury heard evidence only on the measure of dames.

Defendant assigns as error: (1) the court’s granting lintiffs permission to file untimely amended plead-gs adding a new cause of action, (2) the permission to e untimely supplemental pleadings raising collater-estoppel and (3) the finding of collateral estoppel. It only necessary to discuss the third assignment.

Defendant was a party to a previous lawsuit arising t of the same field burning incident brought by ighbors owning property adjoining both that of dntiffs and defendant. In the prior lawsuit, the trial irt ruled that strict liability governed and directed a 'diet for plaintiffs. The parties then settled the case, d the matter was dismissed without the jury having iberated upon it.

The third assignment rests upon three arguments: the ruling in the prior case was not a final judg-nt on which collateral estoppel could be predicated; the record in the present case insufficiently estab-íed the basis for the decision in the prior action for •poses of collateral estoppel; and (3) it was unfair to sose collateral estoppel based on a manifestly er-eous extension of the doctrine of strict liability to activity of field burning.

*386 The first two arguments dispose of the case, so we need not reach the third. A final judgment is a necessary basis for the assertion of collateral estoppel as a bar to relitigation of an issue already tried. Restatement of Judgments, § 41 (1942) states: "The rules of res judicata [ 1 ] are not applicable where the judgment is not a final judgment.” Comment e to that section states also that a judgment which is not final is not conclusive "by way of collateral estoppel between the parties in a subsequent action on a different cause of action.” In McAllister v. Charter First Mortgage, Inc., 279 Or 279, 285, 567 P2d 539 (1977), the Oregon Supreme Court stated:

"Before res judicata applies, the prior lawsuit must have ended in an 'adjudication of issues which have culminated in a final decree.’ Huszar v. Certified Realty Co., 272 Or 517, 523, 524, 538 P2d 57 (1975). See also, R.L.K. and Co. v. Tax Commission, 249 Or 603, 608-09, 438 P2d 985 (1968). In the case at bar there is no evidence that any final judgment or prejudicial dismissal was entered in respect to the defendant.”

We think the same rule applies to the related principle of collateral estoppel. Wolff v. Du Puis, 233 Or 317, 321, 378 P2d 707 (1963), 2 indicates that an issue of fact on which collateral estoppel is predicated should be "determined by a valid final judgment.” We see no reason why the same should not be true where an issue of law is claimed to have been conclusively determined in previous litigation.

The burden is on the party asserting collateral estoppel to prove its elements. State Farm v. Century Home, 275 Or 97, 104, 550 P2d 1185 (1976). The record *387 scloses no evidence that any final judgment or dismissal with prejudice was entered in the first lawsuit, aintiffs did not controvert the statement of defend-t’s counsel at trial that no final order was entered in e prior lawsuit. The correct procedure to assert collateral estoppel is to place into evidence the prior igment and appropriate portions of the record. State Farm v. Century Home, supra at 104. Here we have ly the statements of counsel in the record that the liter was "dismissed,” without further explanation.

An order of dismissal without prejudice adjudicates thing, Huszar v. Certified Realty Co.,supra at 523, d would not lend itself to a later assertion of res licata, Annotation, 149 ALR 557 (1944), or collater-estoppel. Even were there a judgment based on a al order dismissing the suit with prejudice, the estion would remain on remand whether such a Igment "actually and necessarily included,” and was jrefore determinative of, defendant’s strict liability. ORS 43.160; 3 Lewis v. International Business Machines Corp., 393 F Supp 305 (DC Or 1974). Where the ?t judgment was based on a dismissal with prejudice er settlement by the parties, it may be unclear ether or not the judgment is actually determinative the issue in question. For example, the settlement y be a compromise on the issue of liability, which fendant continues to disclaim. 4 Collateral *388 estoppel might also be inappropriate when the prior lawsuit has been settled in those

«*** instanCes in which the party to the first case, at the time of that litigation, does not realize that subsequent litigation is in the offing. Depending upon the circumstances, this might be the basis for a valid argument that it would be unfair to preclude him from relitigating the issue.” Bahler v. Fletcher, 257 Or 1, 11, 474 P2d 329 (1970).

Assessment of such considerations, in the light of all the circumstances, can only be made in each case on the basis of an adequate record of the prior proceeding and of the facts surrounding its settlement. Those things were not present here.

Reversed and remanded.