This is a list of cases reported in volume 300 of United States Reports, decided by the Supreme Court of the United States in 1937. Justices of the Supreme Court at the time of volume 300 U.S. The Supreme Court is established by Article III, Section 1 of the Constitution of the United States, which says: "The judicial Power of the United States, shall be vested in one supreme Court . . .". The size of the Court is not specified; the Constitution leaves it to Congress to set the number of justices. Under the Judiciary Act of 1789 Congress originally fixed the number of justices at six (one chief justice and five associate justices). Since 1789 Congress has varied the size of the Court from six to seven, nine, ten, and back to nine justices (always including one chief justice). When the cases in volume 300 were decided the Court comprised the following nine members: Notable case in 300 U.S. West Coast Hotel Company v. Parrish In West Coast Hotel Company v. Parrish, 300 U.S. 379 (1937), the Supreme Court upheld state minimum wage legislation. The Court's decision overturned an earlier holding in Adkins v. Children's Hospital (1923), and is generally regarded as having ended the Lochner era, a period in American legal history during which the Supreme Court tended to invalidate legislation aimed at regulating business. The decision was popularly called "The switch in time that saved nine". Federal court system Under the Judiciary Act of 1789 the federal court structure at the time comprised District Courts, which had general trial jurisdiction; Circuit Courts, which had mixed trial and appellate (from the US District Courts) jurisdiction; and the United States Supreme Court, which had appellate jurisdiction over the federal District and Circuit courts—and for certain issues over state courts. The Supreme Court also had limited original jurisdiction (i.e., in which cases could be filed directly with the Supreme Court without first having been heard by a lower federal or state court). There were one or more federal District Courts and/or Circuit Courts in each state, territory, or other geographical region. The Judiciary Act of 1891 created the United States Courts of Appeals and reassigned the jurisdiction of most routine appeals from the district and circuit courts to these appellate courts. The Act created nine new courts that were originally known as the "United States Circuit Courts of Appeals."