Not quite getting the word play on these
27a) Catch chap giving richer course material to the Dutch (5) S - R - T. Sprat?
19d) Goddess to destroy American poet's rhythm? (7) D - M - T - R. Demeter?
Also can't quite fully grasp 5 Down, I've seen it answered as EXTINCT
5d) Sometime around one, case in town court finished (7) E - T - N - T.
Off to work now, will pop back on tonight
Thanks for any help.
Les40