Old Style and New Style dates
Shortly after their performances, both 1631 masques, "Callipolis" and "Chloridia," were published together in a [[book size|quarto]] issued by the bookseller [[Thomas Walkley]]. (The 1631 quarto was dated "1630," since prior to 1751 England started the New Year on 25 March instead of 1 January. See: [[Old Style and New Style dates]].) "Callipolis" was reprinted in the [[Ben Jonson folios|second folio collection of Jonson's works]] in [[1641 in literature|1641]].