The usual rule as to priority of liens is that they rank in the order of their filing or recording in the office of the proper officials. A mortgage recorded yesterday has precedence over one recorded today, and both are prior in lien to a mechanic's lien that may be filed tomorrow. As to judgments, there is an exception to this rule; a judgment is not good against the rights of those claiming under a deed or mortgage actually delivered prior to the date of docket of the judgment, even though the deed or mortgage has not been recorded. The reason for this is that the recording laws protect innocent purchasers and mortgages for value and such it may be presumed are those who hold the deeds and mortgages. They parted with value when the deed or mortgage was delivered to them and they relied upon the record title in doing so. The creditor who secures a judgment does so regardless of what a debtor may or may not own - he asserts an existing claim in an action at law and when he secures his judgment it becomes a lien on what the debtor actually owns at that time. It must of course be recognized that deeds and mortgages given to defraud creditors may be set aside, and that reference is here made only to those given in good faith for value. It must also be noted that the lien of all taxes and assessments imposed by any governmental authority is superior to every other lien regardless of the date of the lien or its recording. Of course, the relative rank of any two or more liens can be changed by agreement between the holders of them and this is often done with respect to mortgages by means of an instrument known as a subordination agreement. (Appendix form 49.)