American Milling Methods. By ALBERT HOPPIN.--Ten years' progress.--Low
milling.--Half high milling.--High milling.--Important paper read
before the Pennsylvania State Millers' Association.
Machine for Dotting Tulles and other Light Fabrics.--3 figures.
II. TECHNOLOGY AND CHEMISTRY.--The Reproduction and Multiplication of
Negatives. By ERNEST EDWARDS.
A New Method of Making Gelatine Emulsion. By W. K. BURTON.
The Pottery and Porcelain Industries of Japan.
Crystallization Table.
The Principles of Hop Analysis. By Dr. G. O. CECH.
Water Gas.--A description of apparatus for producing cheap gas, and
some notes on the economical effects of using such gas with gas
motors, etc.--By J. EMERSON DOWSON.
On the Fluid Density of Certain Metals. By Professors CHANDLER ROBERTS
and T. WRIGLESON.
III. PHYSICS, ELECTRICITY, ETC.--Electric Power.--The nature and uses of
electricity.--Electricity vs. steam.
On the Method of Obtaining and Measuring Very High Vacua with a
Modified Form of Sprengel Pump. By Prof OGDEN N. ROOD.--4 figures.--
Apparatus for obtaining vacua of one four hundred-millionth of an
atmosphere--Construction.--Manipulation.--Calculations.--Results
IV. ART, ARCHITECTURE, ETC.--Old Wrought Iron Gates, Guildhall.
Worcester, England. 1 figure.
The French Crystal Palace, Park of St. Cloud, Paris. 1 full page
illustration.
Suggestions in Architecture. A Castellated Chateau. Perspective and
plan. Chateau in the Ægean Sea.