4

a cathedral choir book.

This document, with its
antiquated clasp, is not number paged,
but at each change in the
service, that leaf has a small
coloured metal clip standing
out beyond the edge, (the whole being set
in serrated line), so that the
chorister - remembering the
colour - could open at the
desired music as soon as the organ
struck the first note. [note in red pen: see 4A - 4.B-]

Intermediate between
the age of M.S.S. and the
invention of printing, comes
the Block books, of which
this collection has no original.
The most interesting facsimile
being a folio Biblia Pauperum,
from the British Museum

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