On the Electrical Furnace and the Reduction of the Oxides of
Boron, Silicon, Aluminum, and other Metals by Carbon.--By
EUGENE H. COWLES, ALFRED H. COWLES, and CHARLES F. MABERY. 8112

Chemical Action of Light. 8117

Eutexia.--Cryohydrates.--Eutectic salt alloys and metal
alloys. 8117

Chinoline. 8118

Method of Rapid Estimation of Urea. 1 figure. 8118

Assay of Earthenware Glaze. 8112

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

M. MEIZEL'S Reciprocating Exhauster. 8112

Automatic Siphon for Irrigation. 1 figure. 8113

III. ELECTRICITY, TELEGRAPHY, ETC.--Optical Telegraphy.--