| Rating | Solver | Clue |
|---|---|---|
| MINUSES | Negatives | |
| BOCARDO | A form of syllogism of which the first and third propositions are particular negatives, and the middle term a universal affirmative. | |
| HELIOTYPY | A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography. |