1-8
: All 4 couples set & Petronella in Tandem 1 place to right; all repeat to
  end opposite original position
9-16
: 1s+3s dance Ladies' Chain
17-24
: 2s+4s dance Ladies' Chain
25-32
: All set & turn corner RH; all set & turn partner RH. Ladies face out
33-48
: All dance Schiehallion reels

{{explanation}}
Repeat from new positions