Note: Cosh explicitly tells 1c to pass Lsh in [9-24]; however the Rsh pass is quite common, and nicknamed »Mairi's Divorce«.
Note that both times the couple moving UP makes the arch.
In 17-32, the corners traditionally set one bar to the person you just passed, then one bar to the next person to pass. In a variant for [19-24] 1c turns BH in PdB.
Canon. A new top couple starts dancing every 16 bars, and each continues dancing until they reach their original positions, so that the dance starts from the top, and ends from the top. 1c face out after the chord.
On bar 48 the order will be 4,5,3x,1,2.
On bar 64 the order will be 5,1,4x,2,3.
On bar 80 the order will be 1,2,5x,3,4 and 1c and 2c stop.
On bar 96 the order will be 1,2,3,4,5, all stopped.
On 2nd chord, 3c+4c cross to opposite side (1,2,3x,4x)
(Hint: In all ½ turns and ½Reels face dancer of own sex).