I would guess that it is iambic tetrameter, just because that's probably the most common form for an 8-syllable line. |
He is remembered chiefly for his topographical poem in tetrameter couplets, Grongar Hill, which describes the scenery of the river Towy. |
It's written in tetrameter couplets, a form much more congenial to midcentury writers. |
It is written in rhymed tetrameters, the most artless of English metres and quite unlike the majestic blank verse of Prospero the magician. |
It is well known that, from earliest times, iambus seems to designate iambic trimeters and trochaic tetrameters. |
In this way of talking, the ballad stanza alternates tetrameters with trimeters. |