Much of 365 Days of Verse is written in blank verse. Many know of this form, but in case you don’t here’s a bit of info from Wikipedia:
Blank verse is poetry written in unrhymed iambic pentameter.It has been described as “probably the most common and influential form that English poetry has taken since the sixteenth century”and Paul Fussell has claimed that “about three-quarters of all English poetry is in blank verse.”
Christopher Marlowe was the first English author to make full use of the potential of blank verse, and also established it as the dominant verse form for English drama in the age of Elizabeth I and James I. The major achievements in English blank verse were made by William Shakespeare, who wrote much of the content of his plays in unrhymed iambic pentameter, and Milton, whose Paradise Lost is written in blank verse.