-
Being puzzled with the differing appearance,
-
I at last pointed it out to our captain
-
and asked him the meaning of it.
-
'The cooks,' said he, 'have I suppose
-
just been emptying their greasy water through the scuppers,
-
which has greased the sides of those ships a little.'"
-
So there is an experimental evidence for what Pliny said.
-
"Recollecting what I had formerly read in Pliny,
-
I resolved to make some experiments of the effect of oil on water
-
when I should have the opportunity."
-
And when he had the opportunity was when he was in London.
-
So here's London, and his experiment in 1762 was in that place,