Hand-held Magnifier for liquid samples (No. 254 )
Age: 1845–1855
Made by: James Mackay Bryson
Made in: Edinburgh, Scottland

This is a simple, hand-held microscope made of bronze. It has a curving arm with small flat piece of bone at the handle end. It focuses by a brass screw set to move an attached sample stage. Samples were applied to round coverslips then placed, sample down, onto the focusing plate. The instrument is carried within a small fitted box with red leather cover. This type of hand-held microscope was invented by Dr. Wm. Gairdner of Edinburgh for the examination of objects in fluids, and manufactured by J.M. Bryson of Edinburgh, Scottland.

Son of Robert Bryson; brother of Alexander and Robert Bryson; worked under Repsold in Hamburg, 1843, and later under Merz in Munich; set up as an optician in 1850; worked independently; member of the Edinburgh Merchant Company; instruments are usually signed "Bryson Edinburgh". This instrument is signed "Bryson Edin r".

Thanks to RM for photographic assistance.

Contact: Steven Ruzin, Ph.D Director of the CNR Biological Imaging Facility
and
Curator of The Golub Collection
located in
Valley Life Sciences Building, Onderdonk Lobby
The University of California at Berkeley, USA
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