Tonik Mohair - (not tonic) Was a book produced by fabric merchant Dormeuil in the 60's and 70's http://www.dormeuil.com/ It was invented in 1957. And re-invented in 2000 as Tonik2000. Here is a link Clicky # (book 905)#
3-Ply Mohair: PLY: is term indicating the number of units of which either a yarn or fabric is composed. Thus: 2-ply yarn indicates a yarn composed of two single strands. Three-Ply cloth refers to a cloth which is really composed of three single cloths solidly bound together.