Last May I was in Holland and visited Zwolle and Noordbroek.
Both organ have their pipework arranged in thirds, thusly all third 
are next to each other in very small cases. Zwolle is 90 ranks and 
the case is about 1 meter deep and the pipework is not crowded at all.

Zwolle is in ET and Noordbroek is in Werk III.

On both organs one can use any and all tierce ranks whatsoever in the 
plenum.  There was no zzzzzzzzzzzzzz's or hash noise or conflict 
between harmonic and tempered thirds as far as I could tell.  I feel 
that this is in part due to the chest arrangement which can allow the 
two tierces classes to be drawn more into tune than in an otherwise 
normal arrangement.

There have been other organs that have the pipes in quint arrangement 
to help in 1/4 comma to pull the 5th closer in tune.

There are also some organs arranged in tritones so that there is NO 
drawing at all with any intervals.

I wish that I had more time to investigate this but perhaps in the 
future this may happen.

Any comments?

Guy Henderson

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Note:  opinions  expressed on PIPORG-L are those of the  individual con-
tributors and not necessarily  those of the list owners  nor of the Uni-
versity at Albany.  For a brief  summary of list  commands, send mail to
[log in to unmask]  saying  GET LSVCMMDS.TXT  or see  the  web
page at http://www.albany.edu/piporg-l/lsvcmmds.html .
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::