Yakkun Nattannawā: A Cingalese Poem, Descriptive of the Ceylon System of Demonology; To Which is Appended, The practices of a Capua or Devil Priest, as Described by a Budhist; and Kōlan Nattannawām, a Cingalese Poem, Descriptive of the Characters Assumed by Natives of Ceylon in a Masquerade