Yokohama Specie Bank even keel definitive

The graph depicts flow data from silver branches to gold branches and gold branches to silver branches in the historically delineated period 1893-1908 for a Japanese exchange bank, the Yokohama Specie Bank. The graph demonstrates that the bank was working on an 'even keel' i.e. hedging all silver resp. gold liabilities by acquiring an equal amount of silver resp. gold assets