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OUTLINES OF CHEMISTRY,
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THE USE OF STUDENTS.
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OUTLINES
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CHEMISTRY,
WILLIAM GREGORY,
M.D.,
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PROFESSOR OF CHEMISTRY IN THE UNIVERSITY OF EDINBURGH.
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WITH NUMEROUS ENGRAVINGS ON WOOD.
I.
INORGANIC CHEMISTRY.
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PART
LONDON: PRINTED FOR TAYLOR AND WALTON, UPPER GOWER STREET.
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AND BVANS. PRINTERS, VVHITBFRIARS
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PREFACE.
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THE present work is designed exclusively for the use of students attending Lectures on Chemistry, and is more particularly adapted as a Text-book for my own Lectures. It has no pretensions to any more important character ; and is so far from being intended as a substitute for any of the larger elementary works, its chief value, if it possess any, will be, that introduction to those works.
it
serves as an
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that
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Every teacher of Chemistry must have felt the want of a compact text-book, the price of which might place it within the reach of every student and it is the long-felt sense of this want ;
which has led me
to beginners, of having
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the memory, cannot,
Some
The importance, some such guide and some such help to
to compile these outlines.
I believe,
be over-estimated.*
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apology, or explanation at least, may seem to be required for the omission of certain subjects, usually treated of in elemen-
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tary works on Chemistry.
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and Magnetism
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allude to the subjects of Heat, Light, in short, to the Imponderables. It :
not without ample consideration that I have taken this step. For nearly ten years past, I have been in the habit, in my
lectures, of treating these subjects very briefly, partly because,
my opinion, they belong almost entirely to the province of Physics but also, and chiefly, because the enormously increased extent and importance of Chemistry, especially of Organic
in
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*
It is proper here to state that this work was commenced before the work of Dr. Fownes was announced and that its publication has been delayed by circumstances connected with my removal from Aberdeen to
late
;
Edinburgh.
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VI
PREFACE.
Chemistry, rendered every moment of time, in a course of lectures at best could be but imperfect, precious in the highest
which
Since I had the honour to be appointed to the Chair of Medicine and Chemistry in the University and King's College, Aberdeen, in 1839, I have altogether discontinued the teaching of the above-mentioned subjects as regular sections of the course;
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and have only taught them incidentally, that is, where they