Schreiber's Apparatus for Revivifying Bone Black. 5 figures.--
Plant: elevation and plan.--Views of elevation.--Continuous
furnace.
Soap and its Manufacture from a Consumer's Point of View.
(Continued from SUPPLEMENT, No. 330).
Cotton seed Oil.--By S. S. BRADFORD.
On some Apparatus that Permit of Entering Flames.--Chevalier
Aldini's wire gauze and asbestos protectors.--Brewster's account
of test experiments.
III. ELECTRICITY, LIGHT. ETC.--On a New Arc Electric Lamp.
By W. H. PREECE. 6 figures--The Abdank system.--The lamp.--
The Electro-magnet.--The Cut-off.--The electrical arrangement.
Utilization of Solar Heat.