finished axles, or pieces that are more or less conical as well as those
provided with shoulders.

The apparatus may, if preferred, be driven by small special motors
affixed to the frame. Such an arrangement, which is more costly than the
preceding, is, nevertheless, indicated in cases where shafting would be
in the way.

The weight of the materials entering into the construction of this
machine, proposed by Mr. Chuwab, includes about 15 tons of metal,
of which 5,000 kilogrammes are for the two tempered cylinders; 250
kilogrammes of iron screws, and 350 of bolts; and 500 kilogrammes of
bronze, 90 of which are for nuts.--_Revue Industrielle_.

* * * * *




THE BURNING OF TOWN REFUSE AT LEEDS.

[Footnote: From selected papers of the Institution of Civil Engineers,
London, by Charles Slagg, Assoc. Memb. Inst. C.E.]


In large towns it is necessary to adopt some regular system of removal
and disposal of the cinders and ashes of house fires, and of the animal
and vegetable refuse of the houses, and, in short, of everything thrown
away which cannot be admitted into the sewers. In towns where the
excreta are separated by means of water closets, the disposal of the