This rare stop name has a number of different meanings. Wedgwood defines it as �an 8 ft., or Quint, Gemshorn; also a corruption of Jubalflöte�. According to Adlung, Jula is usually a Spitzflöte of 8' or 6' (5 1/3') pitch. Audsley reports that Schlimbach and Seidel gave this name to the 8' Spitzflöte. Williams has the most to say: A rare stop-name with different meanings in German organs: open Quint-major oder Jula to Samber (1707), Spitzflote 8' to Zang (1829), and 8' stop probably open at Rostock Marienkirche (1580s, H. Glovatz), a narrow open Quinte of gentle tone to the author of the Dresdner Handschrift. Samber was probably copying Praetorius (1619). Grove summarizes Williams, and adds: �a soft, narrow mutation (Praetorius)�.
All known examples are given below.