 This use of the fallen state can also be found in the poems "The Human Abstract" and "London" from the "Songs of Experience" series.The actual tree, described as a tree of "Mystery", appears again in "The Human Abstract" ,and both trees are grown within the mind.Samuel Taylor Coleridge, after being lent a copy of Blake's "Songs of Innocence and Experience" by Charles Tulk, annotated the lines of his copy with symbols representing the phrases "it gave me great pleasure" "and yet" "in the lowest".