Ignaz Schiffermüller (1727 - 1806) was an Austrian naturalist mainly interested in Lepidoptera. Year 1727 ( MDCCXXVII) was a Common year starting on Wednesday (link will display the full calendar of the Gregorian calendar (or a Common Year 1806 ( MDCCCVI) was a Common year starting on Wednesday (link will display the full calendar of the Gregorian calendar (or a Common Austria (Österreich ( officially the Republic of Austria (Republik Österreich Natural history is the Scientific research of Plants or Animals leaning more towards the Observational than Experimental methods Lepidoptera is an order of Insect that includes Moths and butterflies. He was a teacher at the Theresianum college in Vienna. Vienna ( in Wien; see also other names) is the Capital of Austria, and is also one of the nine States of Austria. His collection was presented to the old United Royal and Imperial Natural History Collections (Vereinigtes k. k. Naturalien-Cabinet) at the Hofburg where it burnt during the revolution in 1848. Hofburg Imperial Palace is a palace in Vienna, Austria, which has housed some of the most powerful people in Austrian history, including the Habsburg Year 1848 ( MDCCCXLVIII) was a Leap year starting on Saturday (link will display the full calendar of the Gregorian Calendar (or a Leap With Michael Denis also a teacher at the Theresianum college he published the first index of the Lepidoptera of the Viennese region das Systematische Verzeichnis der Schmetterlinge der Wienergegend herausgegeben von einigen Lehrern am k. Johann Nepomuk Cosmas Michael Denis ( 27 September 1729 - 29 September 1800) was an Austrian Poet, Bibliographer k. Theresianum (1775). His collection is in the Kaiserlichen Hof-Naturalienkabinett (now Naturhistorisches Museum Wien). The Naturhistorisches Museum ( en: Museum of Natural History or NHMW is a large Museum located in Vienna, Austria.