The poem
O soft embalmer of the still midnight, Shutting, with careful fingers and benign, Our gloom-pleas'd eyes, embower'd from the light, Enshaded in forgetfulness divine: O soothest Sleep! if so it please thee, close In midst of this thine hymn my willing eyes, Or wait the "Amen," ere thy poppy throws Around my bed its lulling charities. Then save me, or the passed day will shine Upon my pillow, breeding many woes,-- Save me from curious Conscience, that still lords Its strength for darkness, burrowing like a mole; Turn the key deftly in the oiled wards, And seal the hushed Casket of my Soul.
This poem seems to be within the traditional english sonnet form. However, due to the placement, punctuation and rhyme scheme of the 9-10 lines I believe it also takes on some aspects of the Italian sonnet; mostly the the octave in relation to the turn.