In the Copenhagen Fire of 1728, the University Library was devastated and 30,000 volumes were lost to the flames. Only some materials which against the rules had been removed from the premises by students and professors were saved. After the fire the library was restored along with the rest of the Trinitatis Complex and steps were taken to build a new collection. In 1730, Árni Magnússon bequeathed his book and manuscript collection to the library. It included, most significantly, an extensive collection of Icelandic and other Nordic manuscripts which has since besome known as the Arnamagnæan Manuscript Collection after him. The library introduced loans in 1788.