The motion of the Chicago City Railway Company, Chicago Railways Company, Calumet & South Chicago Railway Company, and the Southern Street Railway Company, for leave “to withdraw as plaintiffs in error in said *583case and to discontinue the writ of error as to them” is granted upon the condition that the exercise of the permission to withdraw shall be a consent to a severance and without prejudice to the right of the City of Chicago to prosecute its writ of error to a final conclusion.