"Canal Ironworks," at the entrance to the Isle of Dogs, London, E. This
notable establishment stands second in priority in London--that of
Messrs. Maudslay, Sons & Field being the oldest--for the manufacture of
marine engines. It was founded by the late Messrs. Seawards, above sixty
years ago. Here was originated Seaward's hoisting "sheers" with the
traveling back leg, a modern example of which, 100 feet high, in iron,
stands on the wharf. An interesting tool, also, is the large vertical
boring machine for largest size cylinders; Seaward spent L5,000 upon
this, and it is certainly an admirable tool. There is also the large
vertical slotting machine, with a stroke up to 5 feet 2 inches, a
wonderfully powerful and compact machine. The extensive collection of
screwing tackle is, perhaps, unsurpassed, and extends up to 8 inches
diameter. There is a peculiar erecting shop roof, which will still repay
examination.

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MARINONI'S ROTARY PRINTING PRESS.


The greatest progress that has been made in recent years in the art
of printing is in the invention of the high speed press provided with
continuous paper.

Three French constructors, Messrs. Marinoni, Alauzet, and Derriey, have
brought this kind of apparatus to such a degree of perfection that
the majority of foreign journals having a large circulation buy their