Okay. Faggotting is a decorative technique used to attach an extra stretch of fabric to the hem of a skirt or sleeve. The purpose is either to add length to a garment or to attach two contrasting coloured fabric. It is sometimes both. Whatever the case, the result is very attractive and give the garment a delicate touch.
Here's an example of this technique.
The book has very few pages. But all the pictures are self-explanatory to an experienced needlewoman dabbling in various techniques.
If you Google 'faggotting images', you'll get a fairly good idea of the practical applications of faggotting.
There are about 5 faggotting techniques that I know of, including this one. I'll post tutorials of them soon.