Great list of stuff Ice!
"Mad as a hatter" is derived from treatment of the beaver skinned hats popular in the late 18th, early 19th century. Mercury was used in the processing of the raw pelts.  Mercury, slowly and constantly absorbed into the hatters' systems caused brain damage, and eventual dementia.Â
Spanker
"Mad as a hatter" is derived from treatment of the beaver skinned hats popular in the late 18th, early 19th century. Mercury was used in the processing of the raw pelts.  Mercury, slowly and constantly absorbed into the hatters' systems caused brain damage, and eventual dementia.Â
Spanker
