Science Past from the issue of February 13, 1960

DISCOVERY ADDS CLUES TO COMPOSITION OF LIGNIN — The sugar glucose is part of the answer to a biochemical riddle — the exact composition of lignin. Lignin, which together with cellulose comprises wood, is a highly complex carbohydrate whose complete structure is unknown. It is considered a waste product…. Experiments … have shown that in Norway spruce trees the lignin is derived from glucose.