Sprung Rythym


in the last 10 minutes of my english lesson on friday, we started looking at sprung rythym, developed by poet Gerard Manley hopkins. Anyway im trying to get better at it and i thought if i knew where it is on the following poem i could study it and get a good idea of how it words.

Pied Beauty

Glory be to God for dappled thing--
For Skies of couple colour as a brinded cow;
For rose moles all in stipple upon trout that swim;
fresh firecoal chesnut falls; finches wings;
Landscape plotted and pieced--fold, fallow, and plough;
And all trades, their gear and tacke and trim

All things counter, original, spare, strange;
whatever is fickle freckled (who knows how?)
with swift, slow;sweet,sour; adazzle, dim;
He fathers forth whose beauty is past change:
Praise Him

Does anyone know how this works and if so could you give me some pointers or help? thanks