Note 222 — Chapter XV · Watt again visits Cornwall—Invention of the Rotary Motion—The Patent Right again assailed.

Watt to Boulton, 30th July, 1781. Later he wrote,—“I am tired of making improvements which by some quirk or wresting of the law may be taken from us, as I think has been done in the case of Arkwright, who has been condemned merely because he did not specify quite clearly. This was injustice, because it is plain that he has given this trade a being—has brought his invention into use and made it of great public utility. Wherefore he deserved all the money he has got. In my opinion his patent should not have been invalidated without it had clearly appeared that he did not invent the things in question. I fear we shall be served with the same sauce for the good of the public! and in that case I shall certainly do what he threatens. This you may be assured of, that we are as much envied here as he is at Manchester, and all the bells in Cornwall would be rung at our overthrow.”—Watt to Boulton, 13th August, 1781.