The Collected works of Herman August Seger.

Creator of the Seger Formula method of glaze formulations, which is sometimes referred to as the Unity Molecular Formula, he also created our standard unit of measurement for kiln firing, the pyrometric cones.

R.T. Stull (Ray Thomas Stull, 1875–1944) was an influential American professor of ceramic engineering at the University of Illinois. He is most famous in the ceramics community for creating the Stull Chart (or Stull Map) in 1912. This landmark chart revolutionized glaze chemistry by moving it away from a process of trial and error into a predictable science