The Water Clock.--3 figures.

New Self-propelling and Steering Torpedoes.

Dobson and Barbour's Improvements in Heilmann's Combers.--1 figure.

Machine for Polishing Boots and Shoes.


II. TECHNOLOGY.--The Use of Gas in the Workshop.--By T.
FLETCHER.--Placing of lights.--Best burners.--Light lost by
shades.--Use of the blowpipe.--Gas furnaces.--Gas engines.

The Gas Meter.--3 figures.

The Municipal School for Instruction in Watchmaking at
Geneva.--1 engraving.


III. ELECTRICITY, ETC.--Personal Safety with the Electric
Currents.

A Visit to Canada and the United States; or, Electricity in
America in 1884.--By W.H. PREECE.


IV. ARCHITECTURE.--The House of a Thousand Terrors, Rotterdam.--With
engraving.