A short 1869 article from The Manufacturer and Builder on two chromium yellow pigments little known at the time: chrome baryta (barium yellow) and zinc yellow (chrome zinc). It gives preparation methods using barium chloride, zinc sulphate, chromate of potash and caustic soda or lye. It also describes a test-tube procedure for finding the right alkali proportion. The text concerns paint pigments, not textile dyeing as such.