"(d) To deliver up on oath for destruction all the infringing copies or devices, as well as all plates, molds, matrices, or other means for making such infringing copies as the court may order; {Sidenote: Supreme Court rules} "Rules and regulations for practice and procedure under this section shall be prescribed by the Supreme Court of the United States," for which see appendix. {Sidenote: Court jurisdiction} The Circuit Court, or District or other courts having circuit jurisdiction, of the United States, have original jurisdiction "of all suits at law or in equity arising under the patent or copyright laws of the United States" with appeal or writ of error to the Supreme Court of the United States. Copyright cases are brought in the first instance before a single judge sitting in Circuit Court or District Court, and thence are appealed to the Circuit Court of Appeals consisting of three or more circuit judges, and thence again to the United States Supreme Court, the final authority. These federal courts have sole jurisdiction under the copyright law as such; but copyright cases are often adjudicated in State courts on questions arising under the law of contracts or other statute or common law, regard being always given to the decisions of the federal courts as to copyright questions proper which may be involved. In other words, the State courts do not pass upon copyright law, but may apply, within the respective states, the copyright decisions of federal courts. Thus in Hoyt _v._ Bates, in 1897, Judge Putnam in the U. S. Circuit Court in Massachusetts remanded the case back to the State courts because the question was not under the copyright law as such, but regarding the ownership of copyright property. In this case the author of a play "A black sheep," containing a song "Sweet Daisy Stokes," licensed the defendant to print the song. The defendant copyrighted the song and the plaintiff sued to compel him to assign his copyright. The case illustrates the respective jurisdictions of federal and State courts in copyright matters. {Sidenote: Limitation}