The carefully jewelled mosaic style was practised very early by Milton. It occurs already in the hymn on the Nativity:--
See how from far upon the eastern road
The star-led wizards haste with odours sweet:
O run, prevent them with thy humble ode
And lay it lowly at his blessed feet.
The same deliberateness and gentle pause of words one after another rounding and falling like clear drops is found in the song of the Spirit in Comus:--
Sabrina fair,
Listen where thou art sitting
Under the glassy, cool, translucent wave,
In twisted braids of lilies knitting