The Anti-Friction Conveyer.--An improvement on the screw of
Archimedes; an apparatus of wonderful simplicity and efficacy in
the moving of grain.--2 illustrations.

The Retiro Viaduct.--Combined iron and stone viaduct over the
river Retiro, Brazil.--5 illustrations.

Western North Carolina Location over the Blue Ridge.--Interesting
instance of railroad topography.--1 illustration.


V. METALLURGY.--Chilled Cast Iron.--The various uses of this
product; adaptability of American iron for its application.


VI. MISCELLANEOUS.--Coal in the Argentine Republic.--Note.

History of the World's Postal Service.--Conclusion of this
interesting article.--The service in Germany, China. Russia, and
elsewhere.--10 illustrations.

Snow Hall--The new science and natural history building of the
University of Kansas.


VII. NAVAL ENGINEERING.--Improvement in Laying Out Frames
of Vessels.--The Frame Placer.--By GUSTAVE SONNENBURG.--Ingenious
apparatus for use in ship yards.--1 illustration.

Sea-going Torpedo Boats.--The inutility of small torpedo boats