Henry Bushby Transcription pages
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As to Iz Reversibles
of the series 2, 8, 14 &c.
20,24, 28 appear in other series, but with
regard to 2 it is certain it cannot be
on Iz except as an unguarded twist. With
regard to 14c
I know no it cannot occur
as a twist plait knot on any but 2z. With
regard to 8c it cannot appear as do on any
but 2z or 3z, but it does appear as I5 2b/8c.
Now of what series does this knot form a part, and can it include 14c ?
Values of x, with y = 14, are
2, 7. 3, 8.
We have ^ (z=1) I3 7b/14c, I8 2b/14c (z = 2)
(z = 1) II3 7b/14c (VII8 2b/14c reducible)
There are therefore 3 knots.
Note that I2 2b/2c, I3 2b/4c I5 2b/8c are
reversibles. I don’t feel sure that I4 2b/6c (2z) is
not so. But the only two regulars on 1z are
I3 7b/14c & II3 7b/14c
Examination shows conclusively that I3 7b/14c
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