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DICTIONARY OF ORGAN STOPS. 151
and of adding to them a cohesion of tone and a dignity so entirely in
keeping with the true and ideal character of the " King of Instruments."
And, to avoid possible misconception, let it here be stated, once for all,
that in thus strenuously urging the need in a non-expressive instrument
like the organ, of this massive quality of tone, the modern school of tonal
architecture does not for one instant advocate the reduction of the whole
foundation of the organ to this standard. Tibia and Diapason are not
synonymous terms, and the modern leathered Diapason, whilst preserving
a due proportion of fundamental dignity, must act as the predominating
influence which shall hold the mean between Tibia, Gamba, and reedwork,
blending at the same time with the Principal which constitutes the
connecting link between the foundation work and the " upper " work of
the organ. One of the cardinal principles of modern tonal design is the
abolition of excessive Mixture-work in favour of the process of building up
brilliancy from within the foundation tone itself. It is, nevertheless, a
fatal mistake unduly to sacrifice foundation and dignity at the altar of mere
" pyrotechnic " display. The problem is dealt with from various aspects
under Diapason (Section 4, et seq.). In fine, it is only necessary in
explanation of the modern attitude, to observe that the rightful claims
of neither dignity and purity of tone, nor brilliancy, are disregarded.
Tibia Angusta— (Lat.) Angustus = narrow. 8 ft.
A very narrow scaled Flute found in some German organs.
'
It was
sometimes bearded,
Akin to Dulzflote.
and then known as Tibia Angusta Barbata (sic/).
Tibia Aperta—(Lat.) Apertus = open. See Fugara.
Tibia Bifara—See Bifara.
Titoia Clausa-(Lat.) Clausus = closed. 8 ft. tone.
The Tibia Clausa is a wood Gedeckt of very large scale, furnished with
leathered lips. It was invented by Mr. Hope-Jones. The tone is powerful,
and beautifully pure and liquid. The prevailing fault of the modern Swell
organ is, perhaps, the inadequacy of the Flutework. One small Gedeckt
or Rohrflote is not sufficient to cope with the modern Gamba and Geigen
or Diapason, to say nothing of reedwork. The fluework of too many
modern Swells is thin in tone. It was the recognition of this shortcoming
which led to the invention of the Tibia Clausa. The Tibia Clausa is to
be found in the Swell organ in many of Mr. Hope-Jones' instruments. In
U.S.A., St. John's School, Manlius, N.Y. ; Park Church, Elmira, N.Y.
(Hope-Jones and Harrison). CC, 7f in. x 5^ in ; Mid. C, 2|£ in. x
1 If in. Mouth cut up about half its width. See Tibia, Tibia Minor,
Tibia Plena.