sentences:  A comparison of this discovered book with the "Guennol Hours" (M 945) revealed that not only were they by the same artist, and from the same workshop, but both "Horae" were incomplete and complemented each other.This observation suggested that they were once a single volume, which had been deliberately disassembled into two separate liturgical books.Scholars believe that sometime in the 1850s, The Hours was separated into two volumes, and several leaves were removed.