possessing greater reducing power than grape sugar found
in diabetic urine.

On Electro Dissolution and its Use as Regards Analysis.--By H.
N. WARREN, research analyst.--Interesting decomposition of cast
iron with production of boron and silicon; experiments with other
metals.

III. ELECTRICITY.--No Electricity from the Condensation of Vapor.--Note
on Herr S. Kalischer's conclusions.

On Nickel Plating.--By THOMAS T.P. BRUCE WARREN.--Notes
on this industry, and suggested improvement for procuring a
bright coat.

The Electro-Magnetic Telephone Transmitter.--New theory of
the telephone's action.

IV. ENGINEERING.--Fuel and Smoke.--By Prof. OLIVER LODGE.--The
second and concluding one of these important lectures.

Gas Engine for Use on Railroads.--The application of six horse
power Koerting gas engine to a dummy locomotive.--1 illustration.

New Gas Holder at Erdberg.--The largest gas holder out of
England.--3 illustrations.

Tar for Firing Retorts.--Simple arrangement adapted for use in
ordinary gas retort benches; results attained.--1 illustration.