From The Scarlet Pimpernel
by Baroness Orczy, chapter 11:
"He stood somewhat insulated: the envoy of the Revolutionary Government of France was not likely to be very popular in England, at a time when the news of the awful September massacres, and of the Reign of Terror and Anarchy, had just begun to filtrate across the Channel."
(Well, no, it had begun to filter
across the Channel. The filtrate
what gets caught in the filter, like the bits of food that get caught in the basket in your sink drain
the liquid that comes through the filter, in modern usage.)
ETA: see correction from lilacsigil
. I got this from someone with a background in science history, and trusted them to have checked their facts (and to have given me a correct definition of "filtrate"). Apparently they hadn't, however. Sorry! Next time I'll check it myself before posting.