Various, The Atlantic Monthly, Volume 12…
“ Twelve pairs of bellows, which it is intended to move by water-power, derived from the Cochituate reservoirs, furnish the breath which pours itself forth in music. Those beautiful effects, for which the organ is incomparable, the crescendo and diminuendo,—the gradual rise of the sound from the lowest murmur to the loudest blast, and the dying fall by which it steals gently back into silence,—the dissolving views, so to speak, of harmony,—are not only provided for in the swell-organ, but may be obtained by special adjustments from the several systems of pipes and from the entire instrument. ”
