"Galleries of the west front of the Cathedral of Amiens, 13th century, illustrating treatment of galleries…
"It is apparent that the auditor, in this case, must be placed in the centre from which the sound proceeds,…
"The females alone excavate the domiciles, which consist either of branching galleries, as in the gallery…
The galleries of the Xyloterus retusus tend to be built rather deeply into the wood, with the branches…