Solid Fuels.

The Manufacture of Steel Castings.

Science in Diminishing Casualties at Sea.--Extract of a paper
read before the British Association by DON ARTURO DE MARCOARTER.

Improved Leveling Machine. 9 figures.

The Span of Cabin John Bridge.

Improvements in Metal Wheels. 3 figures.

Apparatus for the Production of Water Gas. 3 figures.

III. TECHNOLOGY.--The Blue Print Process.--R.W. JONES.

Reproductions of Drawings in Blue Lines on White Ground.--By
A.H. HAIG.

A Plan for a Carbonizing House.--With full description and 5
figures.

The Scholar's Compasses.

The Integraph.--With full description and engraving.

Apparatus for the Manufacture of Gaseous Beverages. 2 engravings.

Sandmann's Vinegar Apparatus. 1 figure.