But a finger-print is a stamped impressionthe finger-tip being the stamp; and it is only necessary to obtain a stamp identical in character with the finger-tip, in order to produce an impression which is an absolute facsimile, in every respect, of the original, and totally indistinguishable from it.

On the other hand, you must take care not to be misled by a superficial resemblance into thinking two unrelated key-syllables identical.