With regard to a Saw Mill, or any other machines that have retrograde movements, I have contrived a method of 'supplying them with water, in such a manner, that one twentieth part of what is generally expended, M'ill answer every intent and purpose requisite-- My new invented Machine for raising Water, is simple ; the cost will not be more than twenty guineas, to complete the mechanism of one sufficiently large to raise water to work six saws, or turn a grist mill. Models of these machines I have, and purpose taking them with me to the next meetings of the different Assemblies, to whom I mean to apply, for encouragement, and at the same time convince them of the truth and utility of my proposals.

(.Yo. 19.)

The following is part of a letter, wrote by the editor, to his Excellency General Washington, dated the 10th. of March, 1785.

After mentioning that kind of machine for propelling boats which the General had seen a model of, 1 proceed to say, -- " I have taken the greatest pains to perfect another kind of boat, upon the principles I mentioned to you at Richmond in November last, and have the pleasure to inform you that I have brought it to great perfection ; it is true it will cost something more than the other way, but, when in use, will be more manageable, and can be worked with as few hands ; the power is immense -- and I have quite convinced myself that boats of passage may be made to go against the current of the Mississippi or Ohio rivers, or in the Gulf Stream (from the Leeward to the Windward-Isla7ids) from sixty to one hundred miles per day. I know this will appear strange and improbable to many persons, yet I am very certain it may be performed, besides, it is simple (when understood) and is also strictly philosophical.