Volume 7, Issue 169supp
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Features
The Atchison Stone Cutting Machine
Steam Dredger
St. Gothard Tunnel
Bath Abbey Church
The Beacon-Tower of Lavezzi
Shoemaker's Wax
A New Method of Germination
Bronzing Plaster of Paris Casts
Nickel Compass Needles
Improved Process for Treating Wood, Etc., for Paper Manufacture
To Tan Lace Leather with Soft Soap
Practical Dyeing Recipes
Damar Varnish for Negatives
Some Facts in regard to Telescopic and Stereoscopic Vision
The Centenary of the Birth of Sir Humphry Davy, December 17, 1878
To make Vignetters by means of Gelatino-Chromate
On Resorcine Colors
Phosphate Soaps
Apparatus for Titration
Substitution of Different Metals in Ultramarine Colors
Light and Heat in Gas-Flames
Nitrous Oxide under Pressure
A New Enemy to the Tea Plant
A Peculiar Observation
Filaria in the Eye
Filaria in the Eye of Man