1-8
: Ladies petronella turn one place to right & all set, Ladies petronella
  turn to right & all set
9-16
: Men dance RH across 1/2 way & turn partner LH into centre, Ladies dance
  RH across 1/2 way & turn other partner LH into centre
17-24
: Repeat bars 9-16 finishing on sidelines
25-32
: Ladies repeat bars 1- 8 to original places
33-40
: All chase clockwise 1/2 way round set, all join hands & circle 8H round
  to right (anticlockwise) to original places

{{explanation}}
Repeat with Men dancing petronella turn one place to right & Ladies dancing LH across at bar 9