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BULLOCH 'NEW BIOLOGICAL' or 'BIOLOGICAL No. 1' MODEL

SERIAL NUMBER: 468

This later version of the Biological (earlier called the 'New Biological', later the 'Biological No. 1), has the 'Sliding Object Carrier' Stage; it could also be supplied mechanical stage, Graduations to the substage and mirror bar, and even as a Binocular model for extra cost. (Brooks collection)