1867 introductions

thumb|Diagram

currency of Romania

currency of Fiji

thought experiment

betting system in which all bets of a particular type are placed together in a pool

vintage rules system for boxing

type of service rifle

type of Side-hinged lifting Breechblock

featural phonetic representation script

thumb|Embriaco's hydrochronometer in the Villa Borghese gardens thumb|A hydrochronometer at Palazzo Berardi, Rome

Graphical method for the real roots of a polynomial