A Dissertation On The Authenticity Of Poems Of Ossian (1806) is a scholarly work written by John Sinclair. The book explores the authenticity of the poems of Ossian, a legendary Scottish bard. The author examines the historical evidence and literary style of the poems to determine whether they were truly written by Ossian or were the work of James Macpherson, a Scottish poet who claimed to have translated them from ancient Gaelic manuscripts. Sinclair...