 This he demonstrated in experiments using chemical compounds on yeast cells.From his research came the "Arndt-Schulz rule", a law concerning dosages in toxicology; named along with Dr. Rudolf Arndt (1835-1900).Schultz published a number of works in the field of pharmacology, including the well-regarded "Pharmakotherapie" (1898), a treatise that was included in Albert Eulenburg's "Handbuch der allgemeinen Therapie und der therapeutischen Methodik".