A Letter to the President of the U. States of America: Proposing a Method Whereby the Merits of the Conflicting Claims of the United States and Great Britain on the Disputed Frontier May be Correctly Examined and Determined, by Scientific Principles, Combined with Indisputable Data, Grounded in Equity : Together with an Examination of the Treaty of 1783 : from which is Derived a Demonstration of the Falsehood of the British Claim