Importance for the decipherment of hieroglyphs. This is the earliest of the series of trilingual inscriptions of the "Rosetta Stone Series", the next being the Decree of Memphis (Ptolemy IV), for Ptolemy IV, and the third, final stone, being the Rosetta Stone, inscribed for Ptolemy V, in 196 BCE. Having a greater number of different hieroglyphs than the Rosetta Stone, the Canopus Stone has ...