kymograph sensitive thread galvanometer (Hartmann & Braun) chemical work table colorimeter nephelometer apparatus for micro gas analysis and tonometric determination respiration apparatus galvanometer (DuBois & Rubens) automatic mercurial air-pump (Raps-Kossel) polarization apparatus string galvanometer (Stoppani & Fahr) Tissot respiration spirometer manometer Jaquet respiration apparatus Grafe head box gas meter Haldane gas analysis apparatus Kronecker apparatus for artificial respiration Kohlrauch projection apparatus (Schmidt & Haensch) projection apparatus (Leitz) bellows for artificial respiration autoclaves apparatus for the sterilization of instruments apparatus for the provision of sterile destilled water Morin's apparatus time registration apparatus compensating and gauging aparatus Wertheim-Salomonson microscope Foucault damper