1-8
: 1s & 3s cross RH & cast down 1 place, lead down between the couple below
  & cast back to 2nd/4th place (opposite sides)
9-16
: 2s+1s & 4s+3s dance 1/2 R&L & Petronella turn 2 places anticlockwise
  round square (end in same places as at bar 8)
17-24
: All dance RH across (1M with 2s, 1L+3M with 4s, 3L with 5s) & 1s & 3s
  change places with partners to dance LH across
25-32
: 1s & 3s cross RH cast down 1 place & all turn RH