"Uffenbach notes the name of the catalog of Van Beughem's collection, shown to him while visiting Rhenford in Franeker. The next morning the brothers visit the university library. Uffenbach comments on its size and position, and compares it to the university library in Groningen. The new library catalog was being printed to replace the old 1656 catalog. Uffenbach comments positively on the librarian Colerus. He starts describing the library and a manuscript."