Sap and grain

Comedy of Errors, [5.1.311-316]. Egeon. “Though now this grained face of mine be hid/ In sap-consuming winter’s drizzled snow,/ And all the conduits of my blood froze up,/ yet hath my night of life some memory,/ My wasting lamps some gading glimmer left,/ My dull deaf ears a little use to hear.”