| Rating | Solver | Clue |
|---|---|---|
| NIAGARA | New York/ Ontario falls | |
| TRENTON PERIOD | A subdivision in the lower Silurian system of America; -- so named from Trenton Falls, in New York. The rocks are mostly limestones, and the pe... | |
| HURON-IROQUOUS | A linguistic group of warlike North American Indians, belonging to the same stock as the Algonquins, and including several tribes, among which ... |