Edward Bausch (Figure 30), 1854-1944, eldest son of J.J. Bausch (1830-1926) who, with Henry Lomb, founded the Bausch & Lomb Optical Company, has a bookplate prominently featuring a beautifully-executed Bausch & Lomb microscope, with a horizontally-placed large image of the test diatom Pleurosigma angulatum  below it (Figure 31).  The microscope mirror is, no doubt, tilted toward a white cloud in the northern sky – a favorite microscope illuminant!  Edward Bausch authored a book on the microscope, Manipulation of the Microscope (Bausch & Lomb Optical Co., 1885, 1891, 1897, 1901, 1902), but this particular bookplate appears in a presentation copy of Henri van Heurck’s Synopsis des Diatomées de Belgique (1880-1885); van Heurck autographed and presented this copy to Edward Bausch (Figure 32).  Van Heurck (Figure 33) is also known through his book on The Microscope (London, 1893), translated into English by Wynne E. Baxter (Figure 34), his book on Photo-Micrography (1894), his A Treatise on the Diatomaceae (1896), and through the microscope made to his specifications by W. Watson and Sons Ltd., known as the “van Heurck” Model (Figure 35).

click image to enlarge (87K) Figure 30

click image to enlarge (228K) Figure 31

click image to enlarge (103K) Figure 32

click image to enlarge (78K) Figure 33

click image to enlarge (111K) Figure 34

click image to enlarge (114K) Figure 35