National Geographic : 1911 Nov
THE KINGDOM OF FLOWERS 1025 Photo by E. H. Wilson, Arnold Arboretum A VARNISH TREE (Rhus vernicifera Dc.), 40 FEET BY 6 FEET: CHING CHI HSIEN, 4,500 FEET The struts are to enable men to incise the trunk and collect the sap without their feet coming in contact with the acrid, poisonous sap. The remarkable lacquer of China is made from this sap. It is the most indestructible varnish known (see pages 1027-8).