Improved Horizontal Steam Engine

The Beaumont Compressed Air Locomotive

The New Orleans and Texas Railroad

Cost of Working a Gas Engine

On the Cost of Working a Gas Engine, Compared with the Same Work Done by Steam Power

Shaft Furnace for the Refining of Cast Iron

On the varying Condition of Carbon in Steel, and its Influence on Eggertz's Coloration Process

The Steamship City of Rome

Steam Dredging for Oyster

Sir Joseph Whitworth

Artists' Homes.—No. 6

Stairs

Auburn Prison

Reciprocal Displacements of the Halogen Elements

The Bottle Business

Volumetric Determination of Lead

Progress in Fire Extinguishment

Synthesis of Citric Acid

The Preparation of Gelatine-Bromide

Differential Thermometer for Class Demonstration

Enamel for Hollow Iron Ware

Horseshoe Nail Making

New Portable Oven

On the Treatment of Faded Prints for Copying

The Reversed Action of Light in Solar Photography

Geology

A Fresh-Water Medusa

The Colorado Potato Beetle

Pacific Salmon

Canary Birds—How to Care for Them

The New Volcano in Lake Ilopango, Republic of San Salvador

The Saddle against the Buggy

The Cotton Crop and its Possibilities

Patents