Thanks TnG, this really is a very nicely done edition, with lovely illustrations.
Modern-day residents of both London and Liverpool might rightly feel a little miffed by Verne's lofty opinion that:
the Mersey, like the Thames, is only an insignificant stream, unworthy the name of river, although it falls into the sea. It is an immense depression of the land filled with water, in fact nothing more than a hole.....
Despite Verne's Gallic attitude towards Merseyside, Timothy Unwin of Liverpool University has made available a useful free French version, with scholarly notes:
http://www.liv.ac.uk/media/livacuk/c..._flottante.pdf
Mr Unwin has restored 37 lines of text in what is now a very short Chapter XIV: these were removed by Verne's original publisher. The deleted lines purport to explain why Dr Pitferge no longer practises his profession: a bizarre and improbable medical incident.
His version also has two of the illustrations in colour, taken from the 1894 de luxe edition.