"You'll have to light the gas, Sairah " said an Artist in a fog, one morning in Chelsea. For although summer was on the horizon, it was cold and damp; and, as we all know, till fires come to an end, London is not fogless-if, indeed, it ever is so. This was a very black fog, of the sort that is sure to go off presently, because it is only due to atmospheric conditions. Meanwhile, it was just as well to light the gas, and not go on pretending you could see and putting your eyes out. This Artist, after putting his eyes out, called out, from a dark corner in his Studio, to something in a dark corner outside. And that something shuffled into the room and scratched something else several times at intervals on something gritty. It was Sairah, evidently, and Sairah appeared impatient.