The substance of a sermon, delivered at Dana, (Mas.) August, 1815, in commemoration of the untimely death of William and Alonzo Babbit, two eldest sons of the Rev. James Babbit: [electronic resource] : who were instantaneously killed by an explosion, which took place in the United States Laboratory, at Albany, N.Y. Dec. 13, 1813. / By the unfortunate father. ; [One line from Job] ; To which is annexed a poem, composed on the occasion, by Silas Ballou, of Richmond, N.H