1-8
: 1s & 3s petronella into centre as 2s & 4s step up, all set.  2s & 4s
  petronella into centre as 1s & 3s petronella onto opposite sides, all
  set
9-16
: 2s+4s dance full reel of 4 up/down centre
17-24
: 1s+2s also 3s+4s dance RH across once round, 2L leads top couples down
  Ladies' side as 4M leads bottom couples up Men's side
25-32
: All Men (at top) also all Ladies circle 4H round once round to left then
  centre 4 dancers dance 1/2 R&L
33-36
: 1M+4L also 3M+2L (all on Ladies' side) lead across between opposite
  couple, cross & cast back to Ladies' side (opposite their ptnrs)
37-40
: 1s & 3s (in 2nd & 4th places) dance 1/2 Figs of 8 round couples above
  them to end 4 1 2 3