Field Kitchens. 8 figures.

A New Cop Winding Machine. 3 figures.

The Preservation of Timber.--Report of the Committee of the
American Society of Engineers.--The Boucherie
process.--Experiments.--Decay of timber.

IV. PHYSICS, ELECTRICITY, LIGHT, ETC.--Apparatus for Measuring
the Force of Explosives.--With engraving.

Lighting and Ventilating by Gas.--Advantages of gas over
electricity, etc.--By WM. SUGG. 2 figures.

Ander's Telephone. 1 figure.

Brown's Electric Speed Regulator. 1 figure.

Magneto-electric Crossing Signal. 2 figures.

The Chromatoscope.--An aid to microscopy.

V. ART AND ARCHITECTURE.--The Barbara Uttmann Statue at
Annaberg, Saxony.

Improvements in Concrete Construction.--Use of Portland
cement.--System of building in concrete invented by Messrs. F. &
J.P. West, London.