American Notes by Charles Dickens

THE journey from New York to Philadelphia, is made by railroad, and two ferries; and usually occupies between five and six hours. It was a fine evening when we were passengers in the train: and watching the bright sunset from a little window near the door by which we sat, my attention was attracted to a remarkable appearance issuing from the windows of the gentleman's car immediately in front of us, which I supposed for some time was occasioned by a number of industrious persons inside, ripping open feather-beds, and giving the feathers to the wind. At length it occurred to me that they were only spitting, which was indeed the case; though how any number of passengers which it was possible for that car to contain, could have maintained such a playful and incessant shower of expectoration, I am still at a loss to understand: notwithstanding the experience in all salivatory phenomena which I afterwards acquired.

I made acquaintance, on this journey, with a mild and modest young quaker, who opened the discourse by informing me, in a grave whisper, that his grandfather was the inventor of cold-drawn castor oil. I mention the circumstance here, thinking it probable that this is the first occasion on which the valuable medicine in question was ever used as a conversational aperient.