What are the next 4 lines of Edgar Allan Poe's poem 'The Raven' Once upon a midnight dreary while I pondered weak and weary?

Here is the first stanza from the poem, 'The Raven,' by Edgar Allan Poe:

Once upon a midnight dreary, while I pondered, weak and weary,

Over many a quaint and curious volume of forgotten lore,

While I nodded, nearly napping, suddenly there came a tapping,

As of some one gently rapping, rapping at my chamber door.

"'Tis some visitor," I muttered," tapping at my chamber door --

Only this, and nothing more."