Hi Wed, the book actually says to tie an elongated diamond knot. As the ends of the rope go in the bottom and then out the top as per a diamond knot, where a turks head the ends come out the middle of the knot. It does look like a turks head but I have included the instructions in the picture from the book. I just cant get the unders and overs right for it. The book is one of those reprints where they have photo copied the pictures and they are not very good quality.