We shall learn when we hear her story. In any event,
it's a clever trick--and easy enough when you know how!"
"Like standing the egg on end," I suggested.
"Precisely. Every trick is easy when you work it backwards. But just
think, Simmonds," he added, "what problems the police will have to
face, if gloves like these become fashionable among cracksmen!"
Simmonds groaned dismally.
"You haven't told us yet how it's done," he said.
I bit back a smile, for Simmonds's tone was that of pupil to master.
"Well," said Godfrey, slowly, "it might be done in several ways. The
first thing is to get a good set of the prints to be reproduced. That
Silva got from this album. The moulds might be made by cutting them in
wood or metal; but that would take an expert--and besides, I fancy it
would be too slow for Silva. He had a quicker way than that--perhaps
by transferring them to a plate of zinc or copper and then eating them
out with acid. Once the mould is secured, it is merely a question of
pressing india-rubber-mixture into it and then heating the rubber
until it hardens--just as a rubber-stamp is made. The whole process
would take only a few hours.
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