SA Supplements Vol 21 Issue 539supp

SA Supplements

Volume 21, Issue 539supp

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Features

Improved Concrete Making Machine

The Nautical Arena, or Aquatic Theater

The Severn Tunnel

The Strength of Spikes

Hydraulic Collision Buffer

Progress in Rack Railways

Economical Railways

Domestic Electric Lighting

Dyeing Anilin Black on Cotton Piece Goods

Improved Wimshurst Machine

What can be Done on a Bicycle

Prize Medal Design for a Town Church

The Theory of Proportion

Luminous Paints

Tests of Vehicle Wheels

Phosphorescence of Marine Animals

Improved Bleaching Process

Dietetic Delusions; their Deleterious Effects, and their Rectification

R. M. Hodges

How Plants are Fertilized

Pyridine

Departments

Patents - May 1, 1886