II. ENGINEERING AND MECHANICS.--Deep Shafts and Deep Mining. 8104

Sinking of the Quievrechain Working Shaft.--Numerous

figures. 8108

On the Elementary Principles of the Gas Engine.--An

interesting paper read before the Gas Institute by Mr.

DENNY LANE, of Cork, and discussion following. 8109

Scientific American Supplement, No. 508, September 26, 1885 · 第 9 / 73 题