“ Though in that opinion some reference was made by the court to the contentions of contract and res judicata, the court expressly declared that it would not make a 'final expression on the question,' but would leave that subject open for further consideration. ”

“ It is apparent that the bill as amended sought by injunction to prevent the collection of taxes on the shares of stock of the bank for the years 1893 to 1900, both inclusive, and indeed it is obvious from the decree that the court considered the case also involved the question whether any other than the taxes provided by the Hewitt act could be imposed upon the bank during the remainder of its corporate existence. ”