INTRODUCTORY REMARKS.
Notwithstanding the great advantages I derived both for myself and others from the various systems of Mnemonics which I made use of from my earliest infancy, I continually felt the want of some principles which might serve as tests for the purpose of estimating the merits or demerits of each system, and without which principles, those who attempt to apply mnemonic contrivances empyrically, must continually be tired, perplexed, and disappointed to such a degree as to make them often underrate, nay, disregard and finally reject as injurious and dangerous, those very engines which, if modified and directed by the hands of principle, would prove to be in reality as gigantic,
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