—The finding of the referee, that the defendant executed a bond in connection with the mortgage which is sought to be foreclosed in this action, is sustained by the recital to that effect in the mortgage, and his decision of the question is conclusive.
But the objection that there is no evidence that the bond was assigned by the obligee to Miltimore, or by Miltimore to Blood, presents a more serious question. The complaint alleges that the bond and mortgage in suit were executed by the defendant King to Chauncey P. King; that they were assigned by him to Miltimore, and by Miltimore to Jeremiah Blood, and were left as a part of Blood’s estate, at his death; and the plaintiff claims to derive title to them, partly as his widow andf legatee, and partly by purchase from his children, who were the other legatees, and under certain proceedings of the Probate Court in Wisconsin. These allegations are denied in the answer. The plaintiff testified, as a witness in her own behalf, that the mortgage was assigned by Chauncey King to Miltimore, and again by Miltimore to Blood; that each of said assignments was in writing, on the back of the mortgage, and that the mortgage was lost. She did not testify that the bond was assigned. She also put in evidence a copy of the record of the assignment from Miltimore to Blood. The assignment purports to transfer the mortgage, but no bond. The assignment from Miltimore to Blood was not absolute, but as collateral security for the payment of two certain promissory notes, made by Miltimore, and which were held by Blood. There is no evidence that the bond was ever in the possession of Miltimore or Blood: on the contrary, th^plaintiff, who testified that *344the mortgage and the Miltimore notes .were among the papers left by her former husband, Blood, at his death in August, 1851, and .that they were in the hands of his administrator or herself until they were lost in October, 1856, stated that she had no recollection of a bond. Upon this state of the evidence, I see no -ground upon which to sustain the finding of the referee, that the bond, as well as the mortgage, was assigned to Miltimore, and by him to Blood. It is well.settled that a mortgage passes by an assignment of the bond to which it is collateral, on the ground that the incident follows the principal debt, but the bond.does not pass by an assignment of -the mortgage. “ The incident shall pass by the grant of :the' principal, but not the principal by ¡the grant - of the incident. Aacessesorium non ducit, sed sequitwr principóle.” (Broom’s Leg. Maxims, 360; Jackson a. Willard, 4 Johns., 43; Wilson a. Troupe, 2 Cow., 196; Jackson a. Blodgett, 5 Ib., 202; Langdon a. Buell, 9 Wend., 80.) As the plaintiff .was .not the owner of the bond, the referee erred in deciding that she was entitled to judgment against i the defendant King for a deficiency.
But the consequences of the want of an assignment .of the bond do not stop here. The assignment of ¡the mortgage withal out the bond, is a nullity. This is the case at law .and in .equity, and for good reasons. The mortgage, before .foreclosure, is but an incident attached to the debt, which cannot ¡be separated from its principal. The mortgage interest, as distinct from the debt, has no determinate .value, and -is not a fit subject for assignment- If it .should be assigned, the-assignee-must hold the interest at-the-will and disposal .of the .creditor who holds the bond. The.control over the mortgaged premises must essentially reside in him who holds the .debt. “It would be absurd in principle, and oppressive in practice, for the debt and mortgage gto be separated and placed in different and independent hands.”
This language of Chief-justice Kent, in the case-.of Jackson a. Willard (4 Johns., 43), was adopted-by Justice Sutherland in Jackson a. Blodgett (5 Cow., 206), and is fully sustained by other authorities. .(Jackson a. Bronson, 19 Johns., 325; Wilson a. Troupe (supra); Powell on Mort., 1115, 1116; Agmer a. Bill, 5 Johns. Ch., 590; Langdon a. Buell, supra.) In the .case last cited, Sutherland, J., said: “The mortgage.cannot exist as an independent debt. If, by .especial agreement, it .does not ac*345company the security assigned, it is ipso facto extinguished, and ceases to be a subsisting demand.” It follows, that the conclusion of the referee, that the plaintiff is entitled to a decree of foreclosure of the mortgage, is also erroneous.
These views render it unnecessary to consider the other questions discussed on the argument, and lead to a reversal of the judgment.
The judgment should be reversed, the report of the referee set aside, and a new trial ordered.
Present, E. D. Smith, T. A. Johnson, and J. 0. Smith, JJ.