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This instrument has all the features of a late 19th-century Continental microscope. A short rectangular pillar sits on a horseshoe base and supports the limb and the stage on trunnions. The body-tube has a rackwork for coarse focusing and carries a triple nosepiece. Fine focusing is by the micrometer screw on the top of the limb. The substage, consisting of an Abbe condenser and iris diaphragm (which itself moves horizontally by rackwork), can be raised or lowered by means of rackwork. The double mirror is attached to the end of the substage mechanism. This microscope was purchased by Dr. William Keiller (1861-1931) in Edinburgh, Scotland, prior to his appointment in 1891 as the first Professor of Anatomy at the University of Texas Medical Branch at Galveston. It comes with wooden carrying case. Signed: E. Leitz Wetzlar no 17327.