A 19th-Century lacquered brass compound monocular drum-type microscope, signed on the body tube support arm NACHET Opticien, Rue Serpente 16, Paris, with friction focusing, wheel condenser, mirror, bull's-eye condenser and 2 eyepieces, in mahogany case - 10 5/8in. (27cm.) wide; and a lacquered brass and black enamelled monocular microscope, signed J. SWIFT & SON LONDON on horseshoe stand, with accessories, in case - 12 3/8in. (31.5cm.) wide. (2)