The Michigan supreme court recently held that the jurisdiction of equity in proceedings for the foreclosure of mortgages is governed by statute, and that equity can only render a personal decree against the mortgagor where the statute expressly permits it. This view, if correct, must be recognized as an exception to the well settled doctrine that a court of equity which has obtained jurisdiction of a controversy on any ground or for any purpose, may retain such jurisdiction for the purpose of administering complete relief. Michigan has repeatedly affirmed this general doctrine.