From a corner he drew out what looked like a flat-topped stand,
about the height of his waist, with a curious box-like arrangement
on it, in which was a powerful light. For several minutes, he
occupied himself with the adjustment of this machine, switching
the light off and on and focussing the lenses.
Then he took the letter to Miss Winslow, laid it flat on the
machine, switched on the light and immediately on the sheet
appeared a very enlarged copy of the writing.
"This is what has been called a rayograph by a detective of my
acquaintance," explained Garrick. "In some ways it is much
superior to using a microscope."
He was tracing over the words with a pointer, much as he had
already done with the toothpick.
"Now, you must know," he continued, "or you may not know, but it
is a well-proved fact, that those who suffer from various
affections of the nerves or heart often betray the fact in their
handwriting. Of course, in cases where the disease has progressed
very far it may be evident to the naked eye even in the ordinary
handwriting.
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