Sentence:  And next morning they found him dead, with his neck broken, in the bottom of the stone pit, with his beautiful clothes a little bloody, and foul and stained with the duckweed from the pond. But his face was a face of such happiness that, had you seen it, you would have understood indeed how that he had died happy, never knowing that cool and streaming <WSD>silver</WSD> for the duckweed in the pond. 
Meaning of the word marked with <WSD> tags:  Anything resembling silver; something shiny and white.