Page:A Letter on the Subject of the Cause (1797).djvu/55

 for Mr. Watt to introduce another valve, which he has done. But certain reaſons, beſt known to himſelf, which the writer of this will not pretend to ſuggeſt, induced him to omit giving your Lordſhip and the Court an account of it, tho’, as I have already noted, on the other valve his Counſel were very profuſe.

This cunning valve, my, Lord, is like the injection water, ſmuggled into another part of the Engine; and ſerves, as in the preceding caſe, to open and shut a communication. It happens however not to be the communication between the cylinder and the condenſer; but what is of much greater conſequence, it opens and ſhuts the paſſage between the boiler and the condenſer. I have materially to remark to your Lordſhip reſpecting this valve, that it muſt be, and is always ſhut during the time the ſteam regulator is open. How then is it poſſible, my Lord, that this condenſer can be cleanſed as in Newcomen’s, provided even the former objections did not exiſt? Thus having aimed at as much perſpicuity as poffible, I hope, and am even confident, your Lordſhip, altho’ no Engineer, will