n the great fastness of the alizarine
dyes against light and fulling. Besides, these dyestuffs contain nothing
whatever injurious to the wool fiber. Sanders, which very much tenders
the wool, as every dyer knows, can in all cases be replaced by alizarine
red and alizarine orange, making an end to the spinners' frequent
complaints about too much waste.

Alizarine blue in particular seems to be destined to replace indigo in
the majority of its applications, having at least the same power of
resisting light and acids, and relieving the dyer of the troublesome,
protracted rinsings required for indigo dyed goods. Every piece-dyer
knows that the medium and dark indigo blue goods still rub off, even
after eight hours' rinsing; but alizarine blue pieces are perfectly dyed
through and clean after one hour of rinsing. Another advantage of
alizarine blue and the other alizarine dyestuffs is that they unite with
all wood colors, as well as with indigo carmine and all aniline
dyestuffs. A fine and cheap dark blue, for instance, is obtained by
mordanting the wool as above stated and dyeing (20 kil.) in the second
bath with 6 kil. alizarine WX and 2 kil. logwood chips; the wood is added
to the bath together with the alizarine blue WX, and the best method is
to put it into a bag which is hung in the bath.--_D. Woll.-Gew.; Tex.
Colorist._

* * * * *

Papier mache has come of late to be largely used in the manufacture of
theatrical properties, and nearly all the magnificent vases, the handsome
plaques, the graceful statues, and the superb gold and silver plate seen
to-day on the stage are made of that material.

* * * * *

CEMENT PAVING.

The streets of "Old London" at the recent Inventions Exhibition at South
Kensington were paved with a material in imitation of old, worn bowlder
stones and red, herring-boned brickwork, all in one piece from one side
of the street to the other. The composition is made by Wilkes' Metallic
Flooring Company, out of a mixture consisting chiefly of iron slag and
Portland cement, a compound possessing properties which won the only gold
medal given for paving at that Exhibition. At the present time the
colonnade in Pall Mall, near Her Majesty's Theater, is being laid with
this paving, which is also being extensively used in London and the
provinces for roads, tramways, and flooring; the composition is likewise
sometimes cast int