14. The unit of heat is that quantity of heat required to raise the temperature of unit mass of water 1° between the limits 0°C and 40°C. Consult Regnault's Experiment.

15. The temperature of a body speaks of the intensity of the heat in that body, hot and cold being comparative terms.

Consult Regnault's Experiments.

16. Despretz established the measure of the conducting power of water. The co-efficient of emission at any given temperature is equal to the coefficient of absorption. A substance for which this substance has a large value is said to be a good radiator. If good radiators of heat are not good absorbers of heat, Prevost's theory of exchanges would not be correct. Glass is very opaque to the heat of an ordinary fire.

The next Guide (No. 2) will be published four days after the January Examination.

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The above are published by EDWARD STANFORD, 55, Charing Cross, London, S.W.

In the Press and will shortly be ready,

CIVIL SERVICE EXAMINATION

GIBSON'S

London Matriculation

GUIDE.

JANUARY, 1883.

CONTENTS:

PART I.-REMARKS ON THE LAST EXAMINATION; HINTS FOR FUTURE TUITION CLASSES IN LONDON.

EXAMINATIONS;

II. TEST PAPERS ON CHEMISTRY AND LATIN GRAMMAR AND

SENTENCES.

III.-CORRESPONDENCE, QUERIES, NOTICES, ETC.

IV. ANSWERS IN FULL TO THE QUESTIONS SET IN THE JANUARY MATRICULATION EXAMINATION, 1883.

BY JOHN GIBSON, M.A.,

First Class Camb. 1874; Author of Preliminary Law and Army Guides,
History and Geography Made Easy, Latin and French

Grammars Made Easy, Specimen IAN

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THE Editor prepares Pupils for this Examination, Privately, in Class, and by means of Correspondence through the Post.

CLASS TUITION.

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POSTAL TUITION.

The excellence of this system, if faithfully followed out, has been proved in the case of the Editor's Pupils over and over again. During 1882, of 21 Postal Pupils sent up for the Public Examinations, 19 passed. Full particulars of the Postal system will be found on page 2 of Guide No. 1.

LAST MONTH'S CLASSES.

Special Classes, formed mainly for the benefit of Postal Pupils, but which others can also join, commence a month before each Examination. During this time all the most important points are gone into, and, by working out Test Papers, Students get into the proper way of answering-a point in which so many, even those who are fairly well up in their subjects, fail.

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