I. CHEMISTRY AND METALLURGY.--Chemical Nature of Starch
Grains.
The Amalgamation of Silver Ores.--Description of the Francke
tina, or vat process for amalgamation of silver ores.--By E.P.
RATHBONE.--6 figures.
Interesting Facts about Platinum.--Draw stones used for drawing
wire of precious metals.
II. ENGINEERING, MINING, ETC.--Modern Locomotive Practice.--Paper
read before the Civil and Mechanical Engineers' Society.--By
H. MICHELL WHITLEY--10 figures.
New Screw Steam Collier, Frostburg.--1 figure.
Destruction of the Tardes Viaduct by Wind.--With engraving.
Joy's Reversing and Expansion Valve Gear.--1 figure.
The Steam Bell for Locomotives.--2 figures.
Diamond Mining in Brazil.--With engravings showing the dam
on the Ribeirao Inferno at Portao de Ferro, and the arrangement
of the machinery.
III. ELECTRICITY, ETC.--The Frankfort and Offenbach Electric
Railway.--With 3 engravings.
Possibilities of the Telephone.--Its use by vessels at sea.
Pyrometers.--The inventions of Siemens and others.
IV. ARCHÆOLOGY.--The Cay Monument at Uxmal.--Discovered by
Dr. Le Plongeon on June 1, 1881.--With engraving.
V. ASTRONOMY.--The Temperature of the Solar Surface Corresponding
with the Temperature Transmitted to the Sun Motor.--By
J. ERICSSON.--With 2 engravings of the sun motor.