Translation of a letter, from Monsieur [Gaspard] Cuenz to Hans Sloane Cuentz provides background for his new system of metaphysics and sends six papers, titles of which are translated. These are: 1 - Extract of the general plan of anew system of metaphysics which Cuentz believes is the same as the one which may explain the celestial system of Isaac Newton 2 - Remarks on the extract of the general plan 3 - Explanations 4 - Other amendments to the plan which were added because of objections 5 - Letter from Cuentz to Osterwald, chief pastor of the Church at Neuschatel 6 - Letter on John Locke by Cuentz 1739