mnemonics

But, if Dumouchels system of mnemonics had been insufficient for themselves, what would it be for him!

Fortunately they possessed Dumouchel's work on mnemonics, a duodecimo in boards with this epigraph: "To instruct while amusing."

And indeed, the manipulation of the bare forms with the help of diagrams and mnemonics is a very humble exercise.

In other words, it is a sort of mnemonics, or artificial memory, to enable people to cheat at play.

Such mnemonics, unless perfectly retained, are apt to prove more of a nuisance than a help.