Letter to Almira P. Barlow
p217“I was much pleased with Mr Furness' preachment; his doctrine came to me with a fresher flavor, that I had just closed a Materialist work, whose Author, too, corrected it for the press, on his death-bed.”
Fuller, Margaret. "To Almira P. Barlow, 5 January 1835." In The Letters of Margaret Fuller, Vol. I: 1817–1838, edited by Robert N. Hudspeth, 217. Ithaca: Cornell University Press, 1983.
Fuller explicitly names Furness and his sermon; Hudspeth identified it as likely William Henry Furness's Spirit of Jesus from September 1834. She read it after finishing an unidentified materialist work and found Furness's doctrine fresher by contrast.