Note 502 — Chapter XXVIII · SCIENCE, ETC.
Reading edition
He must, even then, have had some at work, for he says in the preface to his little work,[502] dated Sept. 22, 1701: 'That the attending and working the Engine is so far from being so,[503] that it is familiar and easie to be learned by those of the meanest Capacity, in a very little time; insomuch, that I have Boys of 13 or 14 years of Age, who now attend and work it to perfection, and were taught to do it in a few days; and I have known some learn to work the Engine in half-an-hour.'