The Lindsays, Volume III by John K. Leys

A thick, murky fog hung over London on the morning of Alec Lindsay's trial. Waves of chill mist rolled up from the river, and met the sulphurous vapours which filled the air. The sun was not visible at all. In every street and building gas was flaming, as if it had been midnight. Rain or snow would have been a relief from the stifling yellow vapour; but neither fell. The cold, clammy, omnipresent fog reigned supreme.

As it happened, Hubert Blake had slept at his uncle's the night before. He had, of course, determined to be present at the trial; and when he came down to breakfast, an hour earlier than usual, he was surprised to see that both Sophy Meredith and Miss Elmwood were dressed ready to go out.