Invitation to participants in the bicentenary celebrations of the Königlich Preussiche Akademie der Wissenschaften, Berlin, issued to T E [Thomas Edward] Thorpe Invitation card issued by the Royal Prussian Academy of Sciences to Thorpe, as the Royal Society's representative. The text verso states that: 'Inhaber dieser Karte wird freundlichst geneten Sich zur zwanglosen Vereinigung der Festgaste am Vorabend der Feier, Sonntag den 18 Marz 8 Uhr, im Festsaale des Hotel de Rome, Charlottenstrasse 44/45 einzufinden...' [The cardholder is cordially invited to the informal gathering of guests on the eve of the celebration, Sunday, March 18th, at 8:00 a.m., in the ballroom of the Hotel de Rome, Charlottenstrasse 44/45]. 19 March 1900