Letter to William H. Channing
p190“the most beautiful of all the melodies While I view etc.”
Fuller, Margaret. The Letters of Margaret Fuller. Edited by Robert N. Hudspeth. Vol. II. Ithaca: Cornell University Press, 1984.
Fuller names 'Tennyson's Elegiacs' explicitly — Hudspeth identified this as 'Leonine Elegiacs,' published in Tennyson's Poems, Chiefly Lyrical (London, 1830).