9900

Apparatus Used for Making Alcohol for Hospital Use during the
Civil War between the States--By CHARLES K. GALLAGHER--A curiosity
of war times described and illustrated.--1 illustration. 9900

Confederate Apparatus for Manufacturing Saltpeter for Ammunition
--By CHARLES K. GALLAGHER--Primitive process for extracting
saltpeter from earth and other material--1 illustration. 9900

Electrolysis and Refining of Sugar--A method of bleaching sugar
said to be due to ozone produced by electric currents acting on
the solution--1 illustration. 9903

Improvements in the Manufacture of Portland Cement--By FREDERICK
RANSOME, A.I.C.E.--An important paper recently read before the
British Association, giving the last and most advanced methods
of manufacture. 9901

Roburite, the New Explosive--Practical tests of this substance,
with special application to coal mining. 9897

The Mechanical Reeling of Silk.--An advanced method of treating
silk cocoons, designed to dispense with the old hand winding of
the raw silk.--3 illustrations. 9898

* * * * *

THE SPANISH TORPEDO BOAT AZOR.

[Illustration: THE SPANISH TORPEDO BOAT AZOR.]

The Azor was built by Yarrow & Co., London, is of the larger class,
having a displacement of 120 tons, and is one of the fastest boats
afloat. Her speed is 241/2 miles per hour. She has two tubes for
launching torpedoes and three rapid firing Nordenfelt guns. She lately
arrived in Santander, Spain, after the very rapid passage of forty
hours from England.

* * * * *

THE NEW SPANISH ARMORED CRUISER REINA REGENTE.

[Illustration: THE NEW SPANISH ARMORED CRUISER REINA REGENTE.]

The new armored cruiser Reina Regente, which has been built and
engined by Messrs. James & George Thomson, of Clydebank, for the
Spanish government, has recently completed her official speed trials
on the Clyde, the results attained being sufficient to justify the
statement made on her behalf that she is the fastest war cruiser in
the world. She is a vessel of considerable size, the following being
her measurements: Length over all, 330 ft., and 307 ft. between
perpendiculars; breadth,