Circulatio - from Athanasius Kircher’s Musurgia Universalis sive ars magna consoni et dissoni (Rome, 1650)

Circulo - from Wolfgang Caspar Printz’ Phrynis Mytilenaeus oder Satyrischer Componist (Dresden/Leipzig, 1696)

Circulo Mezo - from Wolfgang Caspar Printz’ Phrynis Mytilenaeus oder Satyrischer Componist (Dresden/Leipzig, 1696)

Circulatio - from Tomáš Janovka’s Clavis ad Thesaurum magnae artis musicae (Prague, 1701) [PDF]

Circulus - from Mauritius Vogt’s Conclave thesauri magnae artis musicae (Prague, 1719) [PDF]

Circulo and Circolo mezzo - as presented in Johann Gottfried Walther’s Musicalisches Lexicon… (Leipzig, 1732) [PDF]

Circolo Mezzo - from Johann Mattheson's Der vollkommene Capellmeister (Hamburg, 1739) [PDF]

Circulo - from Meinrad Spiess’ Tractatus musicus compositorio-practicus (Augsburg, 1745) [PDF]

Circulatio, Circulo, Kyklosis - from Dietrich Bartel’s Musica Poetica: musical-rhetorical figures in German Baroque (University of Nebraska Press, 1997) [PDF]

Timothy Smith’s Circulatio: a Misnomer? [PDF]

Contributed by Thomas Braatz (December 4-10, 2006)