the differences are radical.

In "Wood on Railroads," second edition, 1832, page 377, we are told that
"after those experiments"--the Rainhill trials--"were concluded, the
Novelty underwent considerable alterations;" and on page 399, "Mr.
Stephenson had also improved the working of the Rocket engine, and by
applying the steam more powerfully in the chimney to increase the draught,
was enabled to raise a much greater quantity of steam than before." Nothing
is said as to where the new experiments took place, nor their precise date.
But it seems that the Meteor and the Arrow--Stephenson engines--were tried
at the same time; and this is really the only hint Wood gives as to what
was done to the Rocket between the 6th of October, 1829, and the 15th of
September, 1830.

There are men still alive who no doubt could clear up the question at
issue, and it is much to be hoped that they will do so. As the matter now
stands, it will be seen that we do not so much question that the Rocket in
South Kensington Museum is, in part perhaps, the original Rocket of
Rainhill celebrity, as that it ever ran in regular service on the Liverpool
and Manchester Railway. Yet, if not, then we may ask, what became of the
Rocket of 1830? It is not at all improbable that the first Rocket was cast
on one side, until it was bought by Lord Dundonald, and that its history is
set out with fair accuracy above. But the Rocket of the Manchester and
Liverpool Railway is hardly less worthy of attention than its immediate
predecessor, and concerning it information is needed. Any scrap of
information, however apparently trifling, that can be thrown on this
subject by our readers will be highly valued, and given an appropriate
place in our pages.--_The Engineer_.

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