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VI.-PROGRESS OF SCIENCE, 171-232:

What human Science has accomplished,-Changes in Social Science, 171.

-Discoverers not Inventors, 172.-Science of Roger Bacon, 173.

-The One Science, 174.-Sun-force, 175.-"The Seeds of Inven-

tion," 176.-The Object of Patents,-Theory and Practice,-Watt

and Telford, 177.-Practical Science,-Mechanical Arts, 178.-

Force of Running Water,-Correlation of Physical Forces,-Oil on

Waves, 180.-Spontaneous Generation,-Guano,-What is Perspec-

tive? 181.-The Stereoscope,-Burning Lenses, 182.-How to wear

Spectacles, Vicissitudes of Mining, 183.-Uses of Mineralogy, 185.

-Our Coal Resources,-The Deepest Mine, 186.—Iron as a Building

Material, 189.-Concrete, not new,-Sheathing Ships with Copper,

190.-Copper Smelting,-Antiquity of Brass,-Brilliancy of the

Diamond, 191.-Philosophy of Gunpowder, New Pear-flavouring,

192.-Methylated Spirit, 193.-What is Phosphate of Lime?-

What is Wood?-How long will Wood last? 194.-The Safety

Match, 195.-Pottery,-Wedgwood, 196.-Imposing Mechanical

Effects, 197-Horse-power,-The First Practical Steam-boat, 198.-

Effect of Heavy Seas upon Large Vessels, 199.-The Railway,-Ac-

cidents on Railways, 200.-Railways and Invasions, 202.-What the

English owe to naturalized Foreigners, 203.-Geological Growth,

204.-The Earth and Man compared,—Why the Earth is presumed

to be Solid, "Implements in the Drift," 205.-The Centre of the

Earth, 206.-The Cooling of the Earth, 207.-Identity of Heat and

Motion, 208-Universal Source of Heat, 209.-Inequalities of the

Earth's Surface, 210.-Chemistry of the Sea, 212.-The Sea: its

Perils, 213.-Limitations of Astronomy, 214.-Distance of the Earth

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from the Sun, 215.-Blue Colour of the Sky, 216.-Beauty of the

Sky, 217.-High Temperatures in Balloon Ascents, -Value of Me-

teorological Observations, Telegraph, and Forecasts, 218.-Weather

Signs, 220.-Barometer for Farmers, 222.-Icebergs and the Wea-

ther, 223.

St. Swithun: his true History, 224.

Rainfall in

London, 225.-The Force of Lightning, 226.—Effect of Moon-

light, Contemporary Inventions and Discoveries, 227.—The Bayonet,

228.-Loot,-Telegram, -Archæology and Manufactures, 229. -

Good Art should be Cheap, 230.-Imitative Jewellery, 231.-French

Enamel, 232.

VII.-LIFE AND HEALTH, 233-266:

Periods and Conditions of Life,-Age of the People, 233.-The Human

Heart, The Sense of Hearing, 234.-Care of the Teeth,-On

Blindness, 235.-Sleeping and Dreaming, 236.-Position in Sleeping,

-Hair suddenly changing Colour, 237.-Consumption not hopeless,

238.-Change of Climate,-Perfumes, 239.-Cure for Yellow Fever,

-Nature's Ventilation, 240.-Artificial Ventilation,-Worth of

Fresh Air, 241.-Town and Country, 243.-Recreations of the

People, The Druids and their Healing Art, 244.-Remedies for

Cancer, 245.-Improved Surgery,-Restoration of a Fractured Leg,

246.-The Original "Dr. Sangrado,"-False Arts advancing true,

247.-Brief History of Medicine, 248.-What has Science done for

Medicine? 249.-Element of Physic in Medical Practice, 250.-

Physicians' Fees,-Prevention of Pitting in Small-pox, 251.-Un-

derneath the Skin, 252.-Relations of Mind and Organization, 253.

-Deville, the Phrenologist, 254.-"Seeing is believing," 255.-

Causes of Insanity, 256.-Brain-Disease, 257.-The Half-mad, 258.

-Motives for Suicide,-Remedy for Poisoning, 259.-New Remedy

for Wounds,-Compensation for Wounds, The Best Physician, 260.

-The Uncertainty of Human Life, 262.

KNOWLEDGE FOR THE TIME.

Historico-Political Information.

Politics not yet a Science.

MR. BUCKLE, in his thoughtful History of Civilization, remarks: "In the present state of knowledge, Politics, so far from being a science, is one of the most backward of all the arts; and the only safe course for the legislator is to look upon his craft as consisting in the adaptation of temporary contrivances to temporary emergencies. His business is to follow the age, and not at all to attempt to lead it. He should be satisfied with studying what is passing around him, and should modify his schemes, not according to the notions he has inherited from his fathers, but according to the actual exigencies of his own time. For he may rely upon it that the movements of society have now become so rapid that the wants of one generation are no measure of the wants of another; and that men, urged by a sense of their own progress, are growing weary of idle talk about the wisdom of their ancestors, and are fast discarding those trite and sleepy maxims which have hitherto imposed upon them, but by which they will not consent to be much longer troubled.”

The Philosopher and the Historian.

"I have read somewhere or other," says Lord Bolingbroke, "in Dionysius Halicarnassus, I think, that History is Philosophy teaching by Example."

Walter Savage Landor has thus distinguished the respective labours of the Philosopher and the Historian. "There are," Mr. Landor writes, "quiet hours and places in which a taper may be carried steadily, and show the way along the ground; but you must stand a tip-toe and raise a blazing torch above your head, if

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you would bring to our vision the obscure and time-worn figures depicted on the lofty vaults of antiquity. The philosopher shows everything in one clear light; the historian loves strong reflections and deep shadows, but, above all, prominent and moving characters."

In writing of the Past, it behoves us to bear in mind, that while actions are always to be judged by the immutable standard of right and wrong, the judgment which we pass upon men must be qualified by considerations of age, country, situation, and other incidental circumstances; and it will then be found, that he who is most charitable in his judgment, is generally the least unjust.

It is curious to find one of the silken barons of civilization and refinement, writing as follows. The polite Earl of Chesterfield says: "I am provoked at the contempt which most historians show for humanity in general: one would think by them that the whole human species consisted but of about a hundred and fifty people, called and dignified (commonly very undeservedly too) by the titles of emperors, kings, popes, generals, and ministers."

Sir Humphry Davy has written thus plainly in the same vein : "In the common history of the world, as compiled by authors in general, almost all the great changes of nations are confounded with changes in their dynasties; and events are usually referred either to sovereigns, chiefs, heroes, or their armies, which do, in fact, originate entirely from different causes, either of an intellectual or moral nature. Governments depend far more than is generally supposed upon the opinion of the people and the spirit of the age and nation. It sometimes happens that a gigantic mind possesses supreme power, and rises superior to the age in which he is born: such was Alfred in England, and Peter in Russia. Such instances are, however, very rare; and in general it is neither amongst sovereigns nor the higher classes of society that the great improvers and benefactors of mankind are to be found."-Consolations in Travel, pp. 34, 35.

Whig and Tory Ministries.

The domestic history of England during the reign of Anne, is that of the great struggles between Whig and Tory; and Earl Stanhope, in his History of England, thus points out a number of precisely parallel lines of policy, and instances of unscrupulous resort to the same censurable set of weapons of party warfare, in the Tories of the reign of Queen Anne and the Whigs of the reign of William IV.

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