Note 351 — Chapter XX · Prosperity of Soho—Young Boulton and Watt—The Riots—William Murdock.
Reading edition
Watt said to Robert Hart, “When Mr. Murdock introduced the slide valve, I was very much against it, as I did not think it so good as the poppet valve, but I gave in from its simplicity.”—Hart, ‘Reminiscences,’ &c.