Chapter XIII

The Liquefaction of Chlorine Gas first effected by Mr. Faraday,
and witnessed by the Author.--Sir H. Davy continues the
investigation.--His paper on the application of Liquefiable Gases as
mechanical agents.--Other probable uses of these bodies.--He
proposes several methods to prevent the fumes which arise from
Smelting-furnaces.--Importance of the subject.--His Letters to
Mr. Vivian.--The Government solicit the advice of the Royal Society
on the subject of protecting the Copper Sheathing of Ships
from the action of sea-water.--Sir H. Davy charges himself with
this enquiry.--He proposes a plan of protection founded on Voltaic
principles.--His numerous experiments.--He embarks on board
the Comet steam-vessel bound to Heligoland, in order to try his
plan on a vessel in motion.--He arrives at Mandal, lands, and
fishes in the lakes.--The Protectors washed away.--He teaches
the inhabitants of Christiansand to crimp fish.--He remains a few
days at Arendal.--A Norwegian dinner.--The Protectors are examined
and weighed.--Results of the experiment.--The steam-vessel
proceeds up the Glommen.--He visits the great waterfall.--Passes
into Sweden.--Has an interview with the Crown Prince of
Denmark, and afterwards with Prince Christian at Copenhagen.--He
visits Professor Oersted.--He proceeds to Bremen to see Dr.
Olbers.--Returns to England.--His third paper read before the Royal
Society.--Voltaic influence of patches of rust.--A small quantity
of fluid sufficient to complete the circuit.--He receives from the
Royal Society the Royal Medal.--The Progress of Voltaic discovery
reviewed.--The principle is of extensive application.--The
Author's researches into the cause of the solution of Lead in spring
water.--An account of the numerous trials of Protectors.--Failure
of the plan.--Report of the French on the state of the protected
frigate, La Constance.--Dr. Revere's new plan of Protection 208

CHAPTER XIV.

The failure of the Ship protectors a source of great vexation to
Davy.--His Letters to Mr. Poole.--He becomes unwell.--He
publishes his Discourses before the Royal Society.--Critical Remarks
and Quotations.--He goes abroad in search of health.--His
Letter to Mr. Poole from Ravenna.--He resigns the Presidency
of the Royal Society.--Mr. Gilbert elected _pro tempore_.--Davy
returns to England, and visits his friend Mr. Poole.--Salmonia, or
Days of Fly-fishing.--An Analysis of the Work, with various
extracts to illustrate its character 283

CHAPTER XV.

Sir H. Davy's Paper on the Phenomena of Volcanoes.--His
experiments on Vesuvius.--Theory of Volcanic action.--His reception
abroad.--Anecdotes.--His last Letter to Mr. Poole from
Rome.--His paper on the Electricity of the Torpedo.--Consolations
in Travel, or the Last Days of a Philosopher.--Analysis of the
work.--Reflections suggested by its style and composition.--Davy
and Wollaston compared.--His last illness.--Arrival at Geneva.--His
Death 341

A GENERAL REVIEW OF THE HISTORY OF CHEMICAL SCIENCE,
AND OF THE REVOLUTIONS PRODUCED IN ITS DOCTRINES BY
THE DISCOVERIES OF SIR HUMPHRY DAVY 415

APPENDIX--Will of Sir Humphry Davy 457

THE LIFE
OF
SIR HUMPHRY DAVY,
BART. &c. &c.