Lignum vitae wood can also be used to brew a tea. Other names for lignum vitae include palo santo (Spanish for "holy wood") Aura palo santo and "bastard greenheart" (not to be confused with true greenheart "Chlorocardium rodiei", a popular wood in shipbuilding, cabinetry, and woodturning but a completely different timber). Lignum vitae is also one of the numerous hard, dense woods loosely referred to as "ironwood". Lignum vitae is hard and durable, and is also the densest wood traded (density: 1.23 g/cm); it will easily sink in water. On the Janka Scale of Hardness, which measures hardness of woods, lignum vitae
Walter Janka 1932 he undertook a type setting apprenticeship. In 1930 Walter Janka became an Organisation Leader, and then a Political leader of the Young Communists (KJVD / "Kommunistischer Jugendverband Deutschlands") for the Chemnitz sub-region. After his elder brother, , had been murdered by the Nazis, Walter himself was imprisoned by the Gestapo. He was remanded in custody in Chemnitz and in Freiburg before being convicted of preparing to commit high treason. After 1 years of imprisonment in Bautzen prison, he spent a six-month term in Sachsenburg concentration camp. Finally, in 1935 he was deported to Czechoslovakia. In 1936 Janka went to