Note 168 — REGISTRATION AND ORNAMENTS OF BACH’S ORGAN WORKS
Wallace Goodrich translation
[The word swell I have used in the foregoing merely to designate the third manual; and it by no means implies that the pipes belonging to that keyboard were enclosed in a swell-box. Although this invention was applied to an English organ for the first time in 1712 (St. Magnus Church, London Bridge), its adoption in Germany has become general only within comparatively recent years, and then only in newly-built instruments.—Tr.]