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TABLE VIII.

Linear Dilatation.

Of Solids by Heat.

Dimensions at 212° of a bar whose length at 32° is 1.00.*

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Glass Tube..............
Platina ..................
Cast Iron ..............
Steel ....................
Iron Wire ...........
Iron (Dulong) ........
Gold..
Copper ..................
Silver ...................
Tin
...........

............ Zinc.

:

1.000828000
1.00088420
1.0011110
1.00118980
1.00144010
1•00118203
1.00146606
1.00172244
1.00190974
1.00217298
1.00284836
1.00294200

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Lead

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Of Liquids by Heat.
From 32° to 2120

Vulgar Fractions. Mercury .................

0.01800 ................... Alcohol (Dalton) ...... 0:11000 Water ..................

0.04444 Water saturated with /

0.05000 common salt Fixed Oils .............. 0.08000 Oil of Turpentine ...... 0.07000 Sulphuric Acid. ...... 0.06000 Nitric Acid ............. 0:11000 Whale Oil .............. 0:08548 ............

.......

* From Ure’s Dictionary of Chemistry.

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A figure like the following, in the Sorborne School, on the wall at the east end of the class-room, showing the meridian altitude of the sun on the shortest and longest days, and at the equinoxes, may be made the means of giving children a good idea of his varying meridian altitude at different times of the year - varying influence arising from this on the vegetable and animal kingdom, etc.

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A List of some of the Philosophical and other Apparatus

used in the King's Somborne School. A geological map of England. A pair of globes.

A compass, a spirit-level, a measuring chain, and models of the simple geometrical solids. · A set of mechanical powers, lever, wheel, and angle, etc., apparatus for illustrating centrifugal force, etc.

A pair of common bellows.
Glass model of a common pump.
Glass model of a diving-bell.

Air-pump and receivers, etc., with other apparatus for various experiments.

Brass bottle-balance for weighing air, gases, etc.
Apparatus for finding specific gravity of bodies.
Apparatus for showing elasticity of steam.
A sectional model of a steam-engine.

Apparatus on heat, etc.-barometer, thermometer, pyrometer.

Apparatus for showing the different conducting powers of metals. Leslie's parabolic reflectors.

Three plane circular discs of white metal, on stands, one smooth, one scratched, one blackened for experiments on the absorption and radiation of heat.

A vessel in the shape of a cube, with faces of different kinds for ditto."

Leslie's differential thermometer.
A magic lantern, with astronomical and other slides.
Glass prisms, lenses, etc., of different kinds.
A small chemical apparatus.

Pneumatic trough, bell-jar, etc., with stop-cock, etc., for collecting and decanting gases, retorts, etc.

Spirit-lamp, argand-lamp, oxy-hydrogen blowpipe, Davy lamp.

A voltaic battery — apparatus for showing Oersted's experiment -the principle of the electric telegraph magnets, etc.

A small electric cylindrical machine, glass, and sealingwax, rods, and pith-balls, stools, with glass legs, Leyden jars, discharging rods, electrometers, etc.

A number of small things, which it would be tedious to make a list of, but which have grown up here by degrees, would suggest themselves to a teacher as he proceeds.

The list given is for the purpose of suggesting to others, things which have been found by experience highly useful ; but the instruction is not in the instruments themselves, but in the use which is made of them.

A teacher having a knowledge of these subjects may give a great deal of useful instruction illustrative of everyday life, by means of simple apparatus of no very expensive kind. This should be added to as the wants of the school require, for fear of incurring expense by the purchase of things which the teachers might not be able to turn to good account.

The Committee of Council on Education will grant to Elementary schools in which pupil teachers are apprenticed pecuniary assistance to the extent of two-thirds of the cost, in purchasing the articles enumerated in a list of apparatus for scientific instruction, which has lately been revised by the Rev. F. Temple, Inspector of Training Schools.

Apparatus may be selected to the value of £10, £15, or £20.

The master must be examined in order to give proof of his qualifications to use the apparatus, but in case of masters already holding certificates of merit, the examination is waived with regard to a limited part of the catalogue.

SCHOOL WEEKLY REPORT.

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