Volume 4, Issue 86supp
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Features
Proposed New Bridge over the Thames, London
Open Contract for foot-Bridge, Manchester
Wings vs. Wheels
Machinery for Making Slag Blocks
Regan's Smokeless Furnace Grates
The Otheoscope
Improved Forging Hammers and Stamps
Fire-Proof Construction
Taylor's Improved Drop light
How to Draw a Straight Line
The Elasticity and Density of Vapors
Experiments on the Maximum Elasticity and Density of Vapors
Influence of Light on the Electric Resistance of Metals
On Iron as a Natural Constituent of Wines
Magnetization of Polarized Light
The Cycloscope
Method of Determining Index of Refraction
The Electric Candle
Longitude by Telegraph
The Electric Conductivity of Water
The Half-Prism Spectroscope
Absorption of Antimony and Arsenic by Charcoal
Analyst to thl' Geological Survey of New Zealand