I. ASTRONOMY.--The Sun's Motion in Space.--By A.M. CLERKE.--
A very interesting article on the determination of this hitherto
uncertain factor.
II. BOTANY.--Hemlock and Parsley.--By W.W. BAILEY.--Economic
botany of Umbelliferæ.
Raphides--the Cause of the Acridity of Certain Plants.--By
R.A. WEBER.--Effect of these crystals on the expressed juice
from calla and Indian turnip and other plants.
The Eremuri.--A very attractive flower plant for
gardens.--1 illustration.
III. DECORATIVE ART.--The Decorative Treatment of Natural
Foliage.--By HUGH STANNUS. The first of a series of lectures
before the London Society of Arts, giving an elaborate
classification of the principles of the subject.--5
illustrations.
IV. ELECTRICITY.--The Independent--Storage or Primary Battery--System
of Electric Motive Power.--By KNIGHT NEFTEL.--Abstract of a
recent paper read before the American Street Railway Association
on the present aspect of battery car traction.
V. GEOGRAPHY.--The Colorado Desert Lake.--A description of the new
overflow into the Colorado Desert, with the prognosis of its
future.
VI. GEOLOGY.--Animal Origin of Petroleum and Paraffine.--A plea
for the animal origin of geological hydrocarbons based on
chemical and geological reasons.
The Origin of Petroleum.--By O.C.D. Ross.--A further and more
lengthy discussion in regard to petroleum and theory of its
production by volcanic action.
VII. GUNNERY.--Weldon's Range Finder.--An instrument for determining
distances, with description of its use.--3 illustrations.
VIII. MECHANICAL ENGINEERING.--Mercury Weighing Machine.--A
type of weighing machine depending on the displacement
of mercury.--1 illustration.
Wheels Linked with a Bell Crank.--Curious examples of
mechanical constructions in the communication of motion
between wheels.--3 illustrations.
IX. MEDICINE AND HYGIENE.--Cold and Mortality.--By Dr. B.W.
RICHARDSON.--The effect of cold upon the operation of the
animal system, with practical rules.
On the Occurrence of Tin in Canned Food.--By H.A. WEBER.--A
very valuable and important series of analyses of American and
other food products for tin and copper.
The Treatment of Glaucoma.--Note on the treatment of this
disease fatal to vision.
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 VIÑA 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
Viña 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 Viña del Mar.]