The Newmanry History

41D Page 301


The law governing the extension of the sequence PSI was still unknown.

The four impulses of the key were next attacked, and they were successfully

The next problem was to determine the law governing the extensions of the

The motor-key was defined as a sequence of dots and crosses of which each

The motor key corresponding to a particular impulse could only be determined

A pair of consecutive different signs in PSI' necessarily corresponded to a

A motor key determined from a PSI' key therefore consisted of a number of

A study of the indicator had suggested the hypothesis that the motor keys of

This left only the middle two indicators to govern the motor key. (This

But five independent motor keys should need at least five

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