Sentence:  O Righteous "Themis", if the Pow'rs above / By Pray'rs are bent to pity, and to love; / If humane Miseries can move their Mind; / If yet they can forgive, and yet be kind; / Tell how we may restore, by second birth, / Mankind, and people <WSD>desolated</WSD> Earth. 
Meaning of the word marked with <WSD> tags:  To deprive of inhabitants.