Ireland During the 1820s Giesecke embarked on field trips in rural Ireland for the purpose of mineralogical research: 1825 (Galway, Mayo, the island of Achill), 1826 (Donegal), and 1828 (Londonderry, Antrim, Tyrone, Down); see Works, below. Death Giesecke remained in his post in Dublin and lived to the age of 72. His demise was sudden; according to Dent, "on March 5, 1833, though in failing health, he went out to dine with a friend in Dublin; after dinner, as they were sitting over their wine, he fell back in his chair and died." The RDS museum in Leinster House closed for two weeks as a mark of respect. Giesecke never married and apparently left no children. He is buried in St. George's Church, Cemetery on Whitworth Road, Dublin. Assessment Giesecke's posthumous reputation appears to rest more on his scientific contributions than his work in the theater. His collections can now be found in many museums in Europe. Part of them was given to the state of Austria directly by Giesecke. They are now at the Ethnological Museum of Berlin. Other parts are kept in Copenhagen. Works Theatrical The Grove Dictionary of Opera gives the following list of Giesecke's theatrical writings: (1789) Oberon, König der Elfen (Singspiel), Paul Wranitzky (an adapted version or plagiarism of Hüon und Amande by Sophie Seyler) (1791) Die Wiener Zeitung (Singspiel), Franz Xaver Gerl and Benedikt Schack (1792) Das Schlaraffenland (Singspiel), Gerl and Schack (1794) Der travestirte Hamlet (play), Vincenc Tuček (1795) Idris und Zenide, Franz Xaver Süssmayr (1796) Die zwölf schlafenden Jungfrauen ("The Twelve Sleeping Maids", play with songs), Matthäus Stegmayer (1796) Uriels Glöcklein, Stegmayer (1796) Die Belagerung von Cythère ("The Siege of Cythera"), translation of Cythère assiégée by Christoph Willibald Gluck, with additions by Franz Anton Hoffmeister (1798) Amadis, der fahrende Ritter von Gallien, G. Stenzerl (1798) Agnes Bernauerin (burlesque), Ignaz von Seyfried (1799) Die Pfaueninsel ("The island of peacocks"), Seyfried and Stegmayer (1799) Der travestierte Aeneas (farce), Seyfried and Stegmayer (1800) Aeneas in der Hölle (travesty), Stegmayer (1801) Die Sonnenjungfrau (travesty), Seyfried and Stegmayer Scientific (1819) On the temporary residences of the Greenlanders during the winter season and on the population of north and south Greenland. Edinburgh: A. Constable. (1822) On Cryolite; a Fragment of a Journal. Edinburgh Philosophical Journal 6: 141–4. (1823) On the mineralogy of Disco Island. Transactions of the Royal Society of Edinburgh, 9: 263–272. (1824) On the Norwegian settlements