1-8
: All dance Snowball Grand Chain for 4 couples: 1s cross RH, 1s+2s change
  places LH on sides, 2s cross RH as 1s+3s change places RH on
  sides, 2s+1s also 3s+4s change places LH on sides to end 3(2)4(1)
9-16
: 3s+2s also 4s+1s dance Ladies' Chain
17-24
: 2s & 1s dance 1/2 Fig of 8 round couple above, 2s+4s Set+Link
25-32
: 3s+4s also 2s+1s dance "Demi-Tournee":

: 3s+4s (2s+1s similarly) dance into prom hold (Men with partner on
  right, 3s facing Men's side & 4s face Ladies' side), wheel
  anticlockwise 1/2 way & Men turn Ladies into middle & all set to
  partners & 3/4 turn (4s & 1s RH, 3s & 2s LH), to own sides.  4 3 1 2