Robert Boyle (1664). “Some Considerations Touching the Usefulnesse of Experimental Naturall Philosophy, ... by the Honorable Robert Boyle Esq; ...”, p.37
Richard Chenevix Trench (1867). “On the Study of Words Lectures Addressed (originally) to the Pupils at the Diocesan Training-school, Winchester by Richard Chenevix Trench”, p.24