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Fig. 5A This interesting slide appears to be evidence of the relationship

          between the firms of Edmund Wheeler and Smith, Beck & Beck. While wrapped in
          Wheeler’s distinctive cover papers and labeled in his hand on the front, it carries the
          unmistakable label of a Smith, Beck & Beck German import on the underside.

         5B – 5E Four examples of the imported German transparent injections, all mounted on

          standard 1” x 3” sized glass slides. Although it is obvious that a transition from the
          original larger 1 ½” x 3” size eventually took place, that date is not known with any

         5F One owner’s answer to the somewhat inconvenient size of the imported German

          histology slides originally offered by Smith, Beck & Beck: the slide has been cut down
          (apparently using a “heavy” hand!) to something approximating the standard 1” x 3”.

          5G – 5I Three classic examples of the celebrated opaque injections by C.M. Topping, late

          1840s through the 1850s, all prepared using chromate of lead (yellow) pigment.

         5J and 5K Two examples of opaque injections by A. Hett, one signed and dated 1849,

          and the other 1850. Hett primarily used vermilion (red) pigment for his injections.

         5L A fine opaque injection by J.T. Norman c. 1850s, unusual in that a white pigment was

          used for injection of the veins.

         5M Excellent three color opaque injection of Human Liver by H. Webb, mid to late 1850s.

          Red, yellow, and blue pigments were used to display and contrast the structures.

10 Originally published in the Winter 2012 Quekett Journal of Microscopy, Issue 41, pages 701-712

                             Republished with permission in Micscape Magazine, March 2016
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