CHAPTER XII.

_TWO-MANUAL ORGANS._

Remarks on the Swell-organ--Organs with Great and Choir-- Borrowing in Two-manual Organs--Chamber Organ by Schmidt-- The Swell-box--Its Construction--The Swell-action--Reed-stops --Manual Couplers--Rising and Falling Bridges--Pedal Couplers --Old Method of Coupling--A Combination Manual--The Pedal Sub-bass of 16-feet Tone--Scale--Wind-valve for Pedal Chest-- Violoncello Stop--Terzo Mano 141