Medical tests started in the 1940s and 1950s, searching for the cause of the disease. Initially, it was expected to be lead poisoning due to the lead mining upstream. Only in 1955 did Dr. Ogino and his colleagues suspect cadmium as the cause of the disease. Ogino coined the term itai-itai disease.
Salix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground.It grows to 30-50â (sometimes to 60â) tall and as wide.It is native to China.alix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground. It grows to 30-50â (sometimes to 60â) tall and as wide. It is native to China.
From Wikipedia, the free encyclopedia. Diamond willow is willow with wood that is deformed into diamond-shaped segments with alternating colors. This is most likely the result of attack by a fungus (Valsa sordida and possibly others), which causes cankers to form in the wood in response to the infection. Diamond willow is prized by wood carvers and furniture makers for its strong contrasting colors (red and white) and its sculptural irregularity of shape.