Walsh 1712.
Adapted by Chip & Fran Handrickson in 1984.
1718 Longways for as many as will

A1  8  Lines of 4 face up, all proper w/ 2nd couple in middle, 
       &  lead up 4 steps &  fall back
    8  1st couple 2-hand turn AS 2nd couple cast around them into 2nd place
A2  8  1st couple cast AS the 2nd couple move up &  change places
    8  1st couple half figure-8 up through 2nd (all progressed, improper)
B   4  1st corners (1st man &  2nd woman) change places
    4  2nd corners likewise
    8  All lead neighbor out to side, turn &  lead back
    4  First couple cast AS 2nd move up between a new first couple

video https://www.youtube.com/watch?v=my7qthNqXR0
music-
TTO 2017