Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The following short treatise was commer (ed seve ral years ago, at the earnest request of the Board of Publication. After the most of it had been writ ten, the entire failure of the writer's health - com pelling him to resign his pastoral charge in New York - made it necessary to lay it aside, and until a very recent period the idea of completing it was abandoned. At the renewed request of the Board it has now been finished, and is given to the public with the hope and prayer that, by the divine bless ing, it may be of some use in the defence of the truth.