The low guards.
Alber –Fool [Master Guard]
Meyer does not like this guard. While other masters seem to imply the person attacking is the fool, Meyer bluntly states that he thinks the fool is the one who is using the guard. His reason is that one cannot defend and attack from this position in a single counter-stroke. Rather, one has to first parry and then gather to prepare for an attack.
Wechsel – Change or Changer
Another guard that is described but not explained. The short edge faces the opponent.
Nebenhut – Side Guard
As best as I can tell, Nebenhut is essentially Wechsel on the left side. Since the long edge faces the opponent there may be some differences in what can be thrown from this guard.