, 41

Witt, azines, 109

Witt, chrysoidine, 116

Witt, naphthol orange, 150

Wood vinegar, 64

Woody fibre, 26

Woulfe, picric acid, 136

Xylenes from tar, 81

Xylidine scarlet, 153

Young, James, burning-oil, 51

Ziegler, tartrazine, 184

Zinin, benzidam, 75

THE END.

_Richard Clay & Sons, Limited, London & Bungay._

Footnotes:

[1] "An experiment concerning the Spirit of Coals," _Phil. Trans._
(abridged), vol. viii. p. 295.

[2] _Report of the Coal Commissioners_ (1866-71), vol. i.

[3] In a paper read before the Royal Statistical Society by Mr.
Price-Williams in 1889, this author points out that, owing to the
introduction of the Bessemer process and other economical improvements,
the amount of coal used in the iron and steel manufacture had fallen in
1867 to about sixteen and a half per cent. of the total quantity raised.

[4] This remark does not apply to Great Britain; our Excise regulations
have practically killed those branches of manufacture requiring the use of
pure wood-spirit.

[5] Since the above was written, new synthetical processes for the
production of indigo have been made known in Germany by Karl Heumann. Of
the commercial aspect of these discoveries it is of course impossible at
present to form an opinion.

[6] With phthalic anhydride gives fluorescein and dyes of eosin and
rhodamin series.

[7] Diazotised and combined with naphthylamines, naphthols, or their
sulpho-acids give azo-dyes.

[8] With naphthols give oxazines and indophenol.

[9] Diazotised and combined with phenols, amines, or sulpho-acids to form
azo-dyes.

[10] Combined with diazotised amido-compounds to form azo-dyes.

[11] Since the above was written the continuation of Koch's researches
upon the tubercle bacillus has culminated in the discovery of his now
world-renowned lymph for the inoculation of patients suffering from
tubercular disease.

[12] In one large factory in Yorkshire there is a set of stills kept
constantly at work making pure aniline at the rate of two hundred tons per
month. The monthly consumption of coal in this factory is two thousand
tons, equal to twenty-four thousand tons per annum.

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