Definition of "contrarieties"

Emily sat in the window, sometimes pondering on objects without, and then on those within, when Lorraine's entrance interrupted a very profound meditation on the strange contrarieties of love affairs in this world.

1831, L[etitia] E[lizabeth] L[andon], chapter XXIV, in Romance and Reality. […], volume I, London: Henry Colburn and Richard Bentley, […], page 324