The first of these is a part of the Quenta Silmarillion proper, Ch. 1, that to my knowledge has no extant parallels; its use of nearly all the devices we have found to belong to the implied poetic tradition places it with the adapted texts.

Green things fell sick and rotted,
and rivers were choked in weeds and slime,
and fens were made, rank and poisonous,
the breeding place of flies;
and forests grew dark and perilous,
the haunts of fear;
and beasts became monsters of horn and ivory
and dyed the earth with blood.

The paratactic and repetitive structure at once draws attention to this passage. Made up of three two-line units, each telling about the corruption of a certain sphere, plus an initial 1+1 pair, its parallels are thematic as well as structural. The rhythm of the lines is broken twice with the shorter fourth and sixth lines, while the assonance of "slime" and "flies," and the fuller rhymes "poisonous" and "perilous" (italicized), strengthened by the alliteration, keep the composition together. Alliteration further links (very appropriately) "fens" and "flies," "forests" and "fear." This "stanza' is highly reminiscent of the style of the Ainulindalë, both formally (as seen in example 1) and thematically, and suggests a lost poetic tradition of the cosmogony, in fragments and style preserved in the prose redaction.²⁹ And this is, I believe, unmistakably poetry.