The name Lander or Launder is unconnected with these (see p.186).
Launder, in his Voyage to India, p. 81, saw one erected in a tank of water.
Also he had towels for his own personal use and those he managed to launder, somehow.
The mud which settles in the launder, if the ore is rich, is taken up and washed in a jigging-sieve or on a canvas strake.
Margaret Sinton came that ...