X. METALLURGY.--On the Elimination of Sulphur from Pig Iron. By J. MASSENEZ.--The desulphurization of pig iron by treatment with manganese, with apparatus employed.--5 illustrations. XI. MISCELLANEOUS.--The California Raisin Industry.--How raisins are grown and packed in California, with valuable figures and data. The Recent Battles in Chile.--The recent battles of Concon and Vina del Mar.--2 illustrations. XII. NATURAL HISTORY.--The Whale-headed Stork.--A curious bird, a habitant of Africa and of great rarity.--1 illustration. XIII. NAVAL ENGINEERING.--A Twin Screw Launch Run by a Compound Engine.--The application of a single compound tandem engine to driving twin screws.--2 illustrations. Improvements in the Construction of River and Canal Barges.--By M. RITTER.--A very peculiar and ingenious system of construction, enabling the same vessel to be used at greater or less draught according to the requirements and conditions of the water.--5 illustrations. Reefing Sails from the Deck--An effective method of reefing, one which has been subjected to actual trial repeatedly in bad weather off Cape Horn.--3 illustrations. XIV. PHYSICS.--The Cyclostat.--An apparatus for observing bodies in rapid rotary motion.--5 illustrations. XV. TECHNOLOGY.--A New Process for the Bleaching of Jute.--By Messrs. LEYKAM and TOSEFOTHAL.--A method of rendering the fiber of jute perfectly white, with full details. A Violet Coloring Matter from Morphine.--The first true coloring matter obtained from a natural alkaloid. Liquid Blue for Dyeing.--Treatment of the "Dornemann" liquid blue. New Process for the Manufacture of Chromates.--By J. MASSIGNON and E. VATEL.--Manufacture of chromates from chromic iron ore by a new process. * * * * * [Illustration: THE BATTLE OF CONCON, CHILE. August 21, 1891. The Congressional troops advancing. The river Aconcagua. Balmaceda's troops retreating. The Esmeralda. Concon Point. The Magellanes. ] [Illustration: THE BATTLE OF VINA DEL MAR, CHILE, AUGUST 1891. Esmeralda firing shell at Fort Callao. Almirante Cochrane firing at Balmaceda's artillery behind Fort Callao. Battery of Congress artillery trying to silence government troops at Vina del Mar. Balmaceda's field batteries at back of Fort Callao. Fort Callao. Congress infantry firing at troops at Vina del Mar, Balmaceda's infantry returning fire of Congress troops opposite. English, American, German, and French men-of-war watching the battle of Vina del Mar.] THE RECENT BATTLES IN CHILE.