Johann, Ritter von Oppolzer. Lithograph by A. Dauthage, 1859, after J.M. Aigner Joseph Matthäus Aigner
John William Strutt, 3rd Baron Rayleigh. Colour lithograph by F. T. Dalton, 1899 Frederick Thomas Dalton
Johann Georg Kruenitz. Indian ink silhouette over pink line engraving by Halle, 1784, after Zurwohnung, 1783 Zurwohnung
Horace Bénédict de Saussure. Etching with watercolour wash en grisaille after J. P. Saint-Ours Jean-Pierre Saint-Ours
Joseph Barclay Pentland. Lithograph by D. Castellini after C. E. Liverati, 1841 Carlo Ernesto Liverati
Marie-Paul-Emile Chauffard. Lithograph by J.B.A. Lafosse, 1868, after P.-L. Pierson Pierre-Louis Pierson
Salomon Schinz. Reproduction of line engraving by J. H. Lips after A. Speisegger Alexander Speissegger
Ottavio Fabrizio Mossotti. Lithograph by F. Martini after C. E. Liverati, 1841 Carlo Ernesto Liverati
Balthazar Walter Foster, 1st baron Ilkeston. Colour lithograph by Sir L. Ward [Spy], 1894 Leslie Ward
Giuseppe Giacinto Moris. Lithograph by D. Castellini after C. E. Liverati, 1841 Carlo Ernesto Liverati