I made this into balls the other night, as the skeins were very twisty and hard to work with. Since then, I've been trying to figure out what to do with it. It is a discontinued yarn and a fairly small quantity. When the yarn quantity is small, it is good to try to find another yarn the same fiber content (100% wool, in this case) and weight to 'extend' it with... like adding more flour to a cooking recipe. As I no longer had any of the packaging for the sock yarn, I found the information about it on yarndex. There are a few others out there of similar gauge, probably even one at Knitpicks... will look again now that I know the specifics. The sock yarn says it is 'Fingering' weight 28-32 stitches per inch on size 2 or 3 needles, while the Rythym calls itself worsted and 19 stitches per inch on size 7 needles (I have it on size 6 in my project and am getting 21.5 stitches per inch). They still make this 'Rhythm' yarn, and in a few good colors (this one is 'Winter Frost', shown on the needles), but it is more expensive now than it was when I bought it, which was in a bagged lot on Ebay 2 or 3 years ago. It is fairly unique among yarns I've worked with - smaller than regular worsted but not too small, changing color as it goes, slight change in size here and there and very soft wool.
Elizabeth: you're right - that is the shirt you sent Esme way back when, 2 years ago!
It was a bit big on her then, and it is getting almost too small now.. what a run!