I have just picked up again after being away for a couple of days but it might be interesting to know that Hardy's manuscript book only had his part written down in it, his fathers had another part and so on. Rarely would a whole tune book have all parts. When Dave Townsend was looking at the manuscripts many years ago he put all the parts together to reconstruct what they were actually playing. As for clarinets, yes they were around and well used at that time. I did my dissertation on the folk music in Hardy's novels many, many years ago and spent hours cross referencing all the references to songs, tunes, psalms etc for the appendix. The dissertation is in the attic somewhere. I might have to start rummaging!