ite processes, the scheme has many advantages.
The soda-bisulphite liquors are more economically prepared; the pulp
obtained is superior in paper-making quality to that resulting from the
lime or magnesia (bisulphite) processes: it is more economically
bleached.

Then, as pointed out, the soda may on the one plan be obtained in a form
in which it is immediately available as a powerful hydrolysing alkali in
the manufacture of a 'soda' pulp. These two systems become, therefore,
in a new sense complementary to one another. Lastly, it is obvious that
the employment of soda as the base opens out a new vista for developing
the electrolytic processes of decomposing common salt.

The authors have assisted in preparing plans for a comprehensive
industrial scheme combining all these more modern developments. In this
scheme it is only the combination which is novel, and as it involves no
new principles in the chemical treatments of the materials we are not
further concerned with it than to have briefly sketched its economic
basis. This may be summed up in result in the important question of cost
and selling price, and the estimate is well grounded that by means of
this scheme _bleached wood-pulp_ can be sold on the English market at
10l. a ton. It is important to note this figure and to compare it with
the prices of twenty years ago. The fall has been continuous,
notwithstanding the influence of the opposing factors of increasing
consumption, exhaustion of accessible supply of timber, and relative
appreciation of the essential costs of steam, chemicals, and labour. It
is important in forecasting the future, since the youngest and
apparently most promising of the 'artificial' cellulose industries
employs wood-cellulose by preference as its raw material (see p. 173).

As a last point it must be considered that as chemists we are bound to
anticipate the realisation of value in the soluble by-products of the
bisulphite processes. Outside the intrinsic interest attaching to the
solution of this problem, it carries with it the promise of a further
economy in the production of wood-cellulose.

~Bleaching of Vegetable Textiles.~--By far the largest of these industries
are those which are engaged in producing the 'pure white' on cotton and
flax goods. The process, considered chemically, is simply that of
isolating a pure cellulose, and we endeavoured to give due prominence to
this view in the original work. It is important to insist upo