[T]he Hand muſt likevviſe act its part, and concur therein [with the eye], tho' not to touch it [the fruit] roughly upon the Tree (nothing is more offenſive to me than thoſe Gropers, vvho, to gather one according to their Mind, vvill ſpoil a hundred by the violent impreſſion of their Unskillful Thumb) but I vvould have the Hand play its part in the manner I ſhall explain hereafter.
Source: wiktionary