This book of Scales for Violin deserves to be more widely known. It is excellent for the student who is ready to play in all keys (at grade 6 and above). It starts with useful bowing exercises on straightforward first position scales, going through the keys by the circle of fifths method, then gradually increases the range to three octaves. All sorts of one-string scales, running thirds, arpeggios and bowing styles are included - there is no need to get bored, and you can work through the book in order without back-tracking. I can't recommend this book enough.