Oliver Wendell Holmes, Jr.

“ If, nevertheless, we assume that mandamus would lie upon a clear case of fraud adequately alleged and proved (State Bd. of Equalization v. People, 191 Ill. 528, 539, 58 L. R. A. 513, 61 N. E. 339) , it would be a strong thing to revise the judgment of the board on the strength of allegations of undervaluations, and the single adjective 'fraudulent' without more specific allegations of fact. ”

“ That, again, is for the state court to decide. The petitioner has no case under the Constitution of the United States, and nothing else is open. This is a writ of error to a state court, so that questions under the state Constitution and laws cannot be considered, as they might be on error to a subordinate court of the United States. ”