On investigation of Doctor Barker's thoughts on a new invented mill, that if a few difficulties (which appeared insuperable in his plan) could be removed, it would be the most powerful method of directing water to turn mills, or other machinery (where circumvolution is required) that has been yet discovered or made use of. These apparent difficulties I have been happy enough to find out effectual means to obviate, by an application of the water, on nearly the same principles as those suggested by the Doctor, though more simple and less expensive. The utilily of these propositions I have proved by experiments, whence I found, that a fourth part

1034 EARLY STEAM

of the expended water, and a tenth part of the expense usually accrued, will pay the cost, and answer every purpose, of all the work or mechanism, at present made use of, for grist mills, &c.

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.