1866: Methyl Violet
1868: Synthetic Madder called alizarin
1872: Methyl Green – still in use today
1873: Sulpher Brown
(Photo: 1868 American dyed indigo – natural)
1866: Methyl Violet
1868: Synthetic Madder called alizarin
1872: Methyl Green – still in use today
1873: Sulpher Brown
(Photo: 1868 American dyed indigo – natural)