IX. Technology.--The Manufacture of Roll Tar Paper.--An extended
article containing a historical sketch and full information
as to the materials used and the methods of manufacture

Smokeless Gunpowder.--By Hudson Maxim.--A comprehensive
article on the manufacture and use of smokeless gunpowder,
giving a sketch of its history, and describing the methods of
manufacture and its characteristics

Method of Producing Alcohol.--A description of an improved
process for making alcohol.--Invented by Mr. Alfred Springer,
of Cincinnati, Ohio

* * * * *





[Illustration: INTERIOR OF THE NEW LABOR EXCHANGE, PARIS.]

[Illustration: NEW LABOR EXCHANGE, PARIS.]

THE NEW LABOR EXCHANGE, PARIS.


The new Labor Exchange is soon to be inaugurated. We give herewith a
view of the entrance facade of the meeting hall. The buildings, which
are the work of Mr Bouvard, architect, of the city of Paris, are
comprised within the block of houses whose sharp angle forms upon