“…Prominent advocates of the identity theory of properties, often referred to as the 'powerful qualities' view, include Carruth (2016), Engelhard (2010), Heil (2003), Ingthorrson (2013), Jacobs (2011), Jaworski (2016), Martin (2008), Schroer (2010), Strawson (2008) and Taylor (2013). 7 Prominent examples of power (or 'dispositional') essentialists about properties include Alvarado (forthcoming), Bird (2007), Dumsday (2013), Ellis (2001), Ellis and Lierse (1994), Oderberg (2017), Shoemaker (1998), Swoyer (1982) and Yates (2013). There are also many necessitarians who tend not to use essentialist language but who nonetheless agree that some natural properties are individuated, at least in part, by the powers that they confer (e.g.…”