Dr William McKelvie revived Bruce's claims in "Lochleven and Other Poems, by Michael Bruce, with a Life of the Author from Original Sources" (1837). Logan's authorship rests on the publication of the poems under his own name, and his reputation as author during his lifetime. His failure to produce the "poem book" of Bruce entrusted to him, and the fact that no copy of the "Ode to the Cuckoo" in his handwriting was known to exist during Bruce's lifetime, make it difficult to relieve him of the charge of plagiarism. John Veitch, in "The Feeling for Nature in Scottish Poetry" (1887, vol. ii. pp. 89–91), points out that the stanza known to be Logan's addition to this ode is out of keeping with the rest of the poem, and is in the manner of Logan's established compositions, in which there is nothing to suggest the direct simplicity of the little poem on the cuckoo.