This swatch is slightly different to the "circles" one, in that all the Main Bed Selected stitches are dropped in one swoop at the end of the knitting (as in Passap Drop stitch), but before casting off.
Save a lot of hassles & transferring stitches from main bed to ribber.
In answer to Alisons' question; You start the caston as for Fullneedle rib, hang comb & weights, then transfer all Main Bed stitches to ribber before starting patterning.
The only difference between this pattern & the 'circles' pattern is that the latter requires dropping sts. as each decrease of the circles occurs ! Releasing sts. is patterndependent.