A Different Salt Glazing

In 1978 Estelle and I visited Tokoname and in a small gallery saw these pots made by Masaaki Shibata-san. We thought they had been salt glazed but somehow seemed different from the usual salt glazing. On talking with the gallery owner we were told that the pots had been fired with rippings from logs that had been rafted for a long distance through the sea. The outside of the logs had absorbed salt from the water and, when used in their firings, had released the salt giving these unusual effects.