H. M. S. Sultan

Ship Canals in 1889

Canals in Progress—At Home

Mechanical Birds

Cast Iron Guns

Mud Docks at Vizagapatam, India

The Hudson's Bay Railway

John Ericsson

American Oil Pipe Lines

La Guayra, Venezuela

Proposed New Tunnel and Gravity Railway between New York and Brooklyn

On Active Oxygen in Vital Phenomena

An Abstract of Original Research

Domes and Towers

Jointed Folding Furniture

Brickmaking Machinery

Evaporation by Multiple Effect

Ammonia Stills

The Spectrum and its Development

The Deterioration of Electrical Conductors

Seeing to a Distance by Electricity

Note on the Photographic Spectra of Uranus and Saturn

Prof. D. E. Hughes, F.R.S.

Some Recent Speculations on the Origin of petroleum

The Babylonian Metrical System

The Nebulæ

Building Plans and Specifications

Useful Engineering Books