I. ENGINEERING.--Farcot's Improved Woolf Compound Engine.--4
figures.
The "Swallow," a New Vehicle.
Boring an Oil Well.
A Cement Reservoir.--2 figures.
"Flying."
II. TECHNOLOGY.--Iron and Steel.--By BARNARD SAMUELSON.
The world's production of pig iron.--Wonderful uses and demands
for iron and steel.--Progress of Bessemer steel.--Latest
improvements in iron making.--Honors and rewards to inventors.
--Growth of the Siemens-Martin process.--The future of iron and
steel.--Relations between employers and workmen.
Machine for Grinding Lithographic Inks and Colors.--1 figure.
A new Evaporating apparatus.--2 figures.
Photo Plates.--Wet and Dry.
Gelatino Bromide Emulsion with Bromide of Zinc.
The Removal of Ammonia from Crude Gas.
III. MEDICINE AND HYGIENE.--The Hair, its Uses and its Care.
The Influence of Effective Breathing in Delaying the Physical
Changes Incident to the Decline of Life, and in the Prevention
of Pneumonia. Consumption, and Diseases of Women.--By DAVID
WARK. M.D.--Pneumonia.--The true first stage of Consumption. The
development of tubercular matter in the blood.--The value of
cod-liver oil in the prevention of consumption.--The influence
of normal breathing on the female generative organs--Showing how
the breathing powers may be developed.--The effects of adequate
respiration in special cases.
Vital Discoveries in Obstructed Air and Ventilation.
IV. ELECTRICITY.--The Portrush Electric Railway, Ireland.--By Dr.
EDWARD HOPKINSON.
The Thomson-Houston Electric Lighting System.--4 figures.
A Modification of the Vibrating Bell.--2 figures.