References in classic literature ?
His white apron flaps languidly in the air, his head gradually droops upon his breast, he takes very long winks with both eyes at once; even he is unable to withstand the soporific influence of the place, and is gradually falling asleep.
To say the truth, these soporific parts are so many scenes of serious artfully interwoven, in order to contrast and set off the rest; and this is the true meaning of a late facetious writer, who told the public that whenever he was dull they might be assured there was a design in it.
In them there were no considerations of Mediterranean cruises, of soporific Southern skies drifting in the Vesuvian Bay.