THE MICROTOMIST S VADE-MECUM

Hoggans' method ').-The bladder, stretched on the Hoggans'
histological rings, with the epithelial surface upwards, is
treated as follows (the epitheliin having been first scraped
off). Nitrate of silver, 1 to 2 per cent., quickly poured on
and off ; expose to dull light for a few minutes; wash; gold
chloride, 1 per cent., 1 minute; wash; reduce in (diffused ?)
light; clear glycerin or oil of cloves; excise from the rings,
and mount.
600. Lymphatics of Pancreas (the Hoggans' method 2).-A
portion of the diffused pancreas of a small rodent is stretched
on histological rings and treated as follows. Silver nitrate,      6QL
1 per cent., quickly poured on and off; wash; reduce (exces-       *
sive exposure is necessary). Stain hematoxylin, wash, dehy- ( 1
drate, clear (oil of cloves), mount in " varnish."
'Journ. of Anat. and Phys.,' xv (1881), p. 359.         -lisl
Ibid., p. 477
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376