should have placed such a form inside the block. Roused by our
objection, the artist proceeds to verify his theory experimentally -
'with quite rudimentary apparatus, too: merely using a chisel to
separate the form for our inspection, he triumphantly proves his
theory.'

'Was it in this way', Eddington asks, 'that Rutherford rendered
concrete the nucleus which his scientific imagination had created?' One
thing is certain: 'In every physical laboratory we see ingeniously
devised tools for executing the work of sculpture, according to the
designs of the theoretical physicist. Sometimes the tool slips and
carves off an odd-shaped form which he had not expected. Then we have a
new experimental discovery,'

To this analogy Eddington adds the following even more drastic one:
'Procrustes, you will remember,' he says, 'stretched or chopped down
his guests to fit the bed he constructed. But perhaps you have not
heard the rest of the story. He measured them up before they left the
next morning, and wrote a learned paper On the Uniformity of Stature of
Travellers for the Anthropological Society of Attica.'

*

Besides yielding a definite answer to the question of how far the
seemingly discovered facts of science are manufactured facts, our newly
won insight into the nature of the electric and magnetic polarties
throws light also on the possibility of so handling both that their
application will lead no longer to a cancellation, but to a true
continuation, of nature's own creative deeds.