II. ENGINEERING AND MECHANICS.--Links in the History of the
Locomotive.--With two engravings of the Rocket.

The Flow of Water through Turbines and Screw Propellers.--By
ARTHUR RIGG.--Experimental researches.--Impact on level
plate.--Impact and reaction in confined channels.--4 figures.

Improved Textile Machinery.--The Textile Exhibition at
Islington.--5 figures.

Endless Rope Haulage.--2 figures.

III. TECHNOLOGY.--A Reliable Water Filter.--With engraving.

Simple Devices for Distilling Water.--4 figures.

Improved Fire Damp Detecter.--With full description and engraving.

Camera Attachment for Paper Photo Negatives.--2 figures.

Instantaneous Photo Shutter.--1 figure.

Sulphurous Acid.--Easy method of preparation for photographic
purposes.

IV. PHYSICS. ELECTRICITY, ETC.--Steps toward a Kinetic
Theory of Matter.--Address by Sir Wm. THOMSON at the Montreal
meeting of the British Association.