The sketch of Mr. Euler's method has given me great pleasure, but it has not altered my ideas of this matter one bit, I remain convinced that my method provides for all the possible instances in abstracto. I will admit however that, in certain cases, that of Mr. Euler's is preferable to mine, but there are also points of view to the contrary since my method can be applied to such a number of finite bodies which is proposed even though in the system there is no perfect return or period to wait for. Irrespective of my pretensions, I am always prepared to drop my flag before my admiral.