I'm at work right now, so I can't run and check, but I have a couple of vintage Paton's booklets too. I do believe they list them as either/or. Especially since there is no mention in the pattern to switch yarns, I would assume that which yarn you use is up to you.

The Paton's patterns sometimes give alternate yarns to use. Check to make sure the needle size corresponds but apart from that the directions are the same. I have an old shawl pattern that uses two ply or three ply - have used either one ok.

Thank you, both, for helping me clear that up!

I am wondering just what exactly does `patonised` mean , I have a vintage pattern and it calls for beehive baby wool patonised how can I find the right type of yarn