Then Swänska Argus (modern Swedish: Den Svenska Argus, IPA: [dɛn ²svɛnska ²arɡɵs], "The Swedish Argus") was an 18th-century periodical written entirely by Olof von Dalin, an influential Swedish poet. It was published weekly from 1732 to 1734 and contained short stories, poems, plays and editorials, totalling between 6 and 10 printed pages. Its first issue, published on December 13, 1732, is commonly considered to be the dividing line between Older New Swedish and Younger New Swedish (äldre nysvenska and yngre nysvenska). Dalin wrote the periodical in a free and lively conversational tone that contrasted with other influential Swedish writers of the time, such as Carl Gyllenborg. The publication also had an important influence on the development of Swedish orthography. Dalin was only 25 at