The pattern said to join the chains only on the side that would curve inward, but that led to an unruly mess with this purple motif.
With the dark pink motif, I joined the chains on both sides and was still able to block it to curve gently.
I'll show you what I'm doing with these later.
You can easily get your own copy of this vintage book. It is available as a reprint from Dover Books as this book:
Even better, you can download it for free from the Antique Pattern Library. Click HERE for a list of their recent additions to their collection, including this one. You can also get it from Georgia's Archive of Tatting Books in the Public Domain, but note that she has a later edition that has fewer pages (and horrors, cost 10 cents more).
Thanks for the advice on the free patterns last time. I'll quit worrying about standardizing the notation and put the abbreviations back in. Whenever I find time to work on it again....