Chapter V: MECHANICAL ENGINEERING.--Compressed Air Production

By WM. L. SAUNDERS.--A Sibley College lecture, giving full
elaboration to this important subject.--The various forms of
compressors and general features of the service.--18 illustrations.

Improved Pneumatic Hammer.--A suspension hammer capable
of delivering 500 blows per minute.--8 illustrations.

The Thermic Motor of the Future?--A remarkable exposition of
the possibilities of the gas engine.--Recent experiments under M.
Aime Witz.--2 illustrations.