sixthly: The indirect features of the Scheme must not be such as to produce injury to the persons whom we seek to benefit.
"In-Darkest-England-and-the-Way-Out"
Booth, William
sixthly, the cost and condition of skilled and unskilled labour in Ireland.
"Thomas Davis, Selections from his Prose and Poetry"
Thomas Davis Commentator: T. W. Rolleston
9. sixthly, I remember, that Acquainting one Day a Virtuoso of Unsuspected Credit, that had Visited Hot Countries, with part of what I have here Deliver'd concerning Blackness, he Related to me by way of Confirmation of it, a very notable Experiment, which he had both others make, and Made himself in a Warm Climate, namely, that having carefully Black'd over Eggs, and Expos'd them to the Hot Sun, they were thereby in no very Long time well Roasted, to which Effect I conceive the Heat of the Climate must have Concurr'd with the Disposition of the Black Surface to Reflect the Sunbeams Inward, for I remember, that having made that among other Tryals in England, though in Summer-time, the Eggs I Expos'd, acquir'd indeed a considerable Degree of Heat, but yet not so Intense a One, as prov'd Sufficient to Roast them.
"Experiments and Considerations Touching Colours (1664)"
Robert Boyle