The sender was urged on to do it by someone else who also had an
interest of another kind in placing Mr. Warrington in a bad light
with Miss Winslow. But the sender soon realised his mistake. The
fact that he was willing to go to the length of a dangerous
robbery accompanied by arson in order to get back or destroy the
letter showed how afraid he was to have a sample of his
handwriting fall into my hands. He blundered, but even then he did
not realise how badly.
"For, in certain cases the handwriting shows a great deal more
than would be recognised even by the ordinary handwriting expert.
This letter showed that the writer was, as I have already
explained to Mr. Marshall, the victim of a peculiar kind of
paralysis which begins to show itself in nerve tremours for days
before the attack and exhibits itself even in the handwriting.
"Now, my string galvanometer shows not only the effects of these
moving and talking pictures on the emotions, but also, as it was
really designed to do, the state of the heart with reference to
normality.
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