Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not bad, but....

This is a decent book on heraldry, but suffers from many of the problems that the "classic" works have- most notably, it's about one hundred years out of date. Additionally, it lacks the clarity and vigour found in classics such as Fox-Davies, and is rife with typographical errors (such as a shield clearly containing a bend being blazoned as having a chevron).