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## Henry Bushby Transcription pages

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151

The rules derived from P (in vol

ii. [?] & summarised in vol iv) ap-

ply to all "figures" & index ~~[?]~~ numbers

alike: e.g. the relations of b,c,

z & x, and the rule of F are the

same always. Necessarily, no law

of reduction is applicable to P=

Group I.

A general law of reduction was

found for Torsions wherein seq=n-1.~~Perhaps~~A group with seq" n-2"

is impossible because n-1 & x-z

are primes (unless n=3 & then we

get back to I again.)

With 5, n-3=2, n-1=4 So

here a Group with seq. n-3 is possible.

But in no other possible case can

n-3 be a measure of n-1 (barring

4, & here we get back to I.)

With 7, n-4 is a factor of n-1

(3&6) but in no other case.