Complex sentence: It has been suggested that Hergot was probably the first to publish the text, as the material seems to come from Nuremberg: its material on tempering and quenching is similar to the short treatise on hardening iron beginning' Von dem herten.
Split into simpler sentences: It has been suggested that Hergot was probably the first to publish the text, as the material seems to come from Nuremberg. This material is similar enough to the short treatise on hardening iron beginning' Von dem herten.