When he was back in Stockholm, he worked hard on deciphering the runes but had to give up. Eventually he tried to add staves to the runes and suddenly deciphered some of the staveless runes. By 1674, he had deciphered all the runes except for the R rune, which he interpreted as a distinguishing mark. The following year, Celsius made a speech at Uppsala University, where he made his discovery public. He started the process of publishing his discovery shortly after making the speech but died suddenly before the printing was finished. However, the news of the discovery spread quickly among scholars and it was used as the basis of the claim that stenography had originated in Sweden. It would be Olof Celsius who finally published his father's discovery. The following runestones are some of those that feature staveless runes: