The Corporation Commission shall, whenever an appeal is taken therefrom, file with the record of the case, and as a part thereof, a written statement of the reasons upon which the action appealed from was based, and such statement shall be read and considered by the Supreme Court, upon disposing of the appeal. In no case of appeal from an order of the Corporation Commission shall any new or additional evidence be introduced in the Supreme Court, but the cause shall be heard on the record made before the Corporation Commission, and the Chairman of the Commission, under the seal of the Commission, shall certify to the Supreme Court all the facts upon which the action appealed from was based, and which may be essential for the prompt decision of the appeal, together with all evidence introduced before said Corporation Commission, as may be selected, specified or required to be certified, by any party in interest, as well as such other evidence, so introduced before the Commission as the Chairman may deem proper to certify; provided, however, that in any appeal from an order of the Corporation Commission in which a party thereto asserts the violation of any right under the Constitution of the United States or the Constitution of the State of Oklahoma, the Supreme Court shall require the Commission to take and receive such additional evidence as is necessary to judicially determine the rights of the parties and report the same to the Court, in such manner as the Court may prescribe, for its consideration before the appeal is finally decided.
