I. ARCHITECTURE.--Elements of Architectural Design.--By H. H.
Statham.--Continuation of this important contribution to
building art, Gothic, Roman, Romanesque, and Mediæval
architecture compared.--26 illustrations. 10339
The Evolution of the Modern Mill.--By C. J. H.
Woodbury.--Sibley College lecture treating of the
buildings for mills. 10329
II. CHEMISTRY.--An Automatic Still.--By T. Maben.--An improved
apparatus for making distilled water.--1 illustration. 10335
Testing Indigo Dyes.--Simple and practical chemical tests
of indigo products. 10342
III. CIVIL ENGINEERING.--Railway Bridge at Lachine.--Great
steel bridge across the St. Lawrence near Montreal.--2
illustrations. 10333
IV. ELECTRICITY.--Influence Machines.--By Mr. James
Wimshurst.--A London Royal Institution lecture, of great
value as giving a full account of the recent forms of
generators of static electricity.--14 illustrations. 10327
V. HYGIENE.--The Care of the Eyes.--By Prof. David Webster,
M.D.--A short and thoroughly practical paper on the all
important subject of preservation of sight. 10341
VI. MECHANICAL ENGINEERING.--Economy Trials of a
Non-condensing Steam Engine.--By Mr. P. W. Winans,
M.I.C.E.--Interesting notes on testing steam engines. 10331
The Mechanical Equivalent of Heat.--By Prof. De Volson
Wood.--A review of Mr. Hanssen's recent paper, with
interesting discussion of the problem. 10331
VII. METEOROLOGY.--The Meteorological Station on Mt. Santis.--A
new observatory recently erected in Switzerland, at an
elevation of 8,202 feet above the sea.--1 illustration. 10341
VIII. NAVAL ENGINEERING.--Improved Screw Propeller.--Mr. B.
Dickinson's new propeller.--Its form and peculiarities and
results.--4 illustrations. 10333
IX. PHOTOGRAPHY.--Manufacture of Photographic Sensitive
Plates.--Description of a factory recently erected for
manufacturing dry plates.--The arrangement of rooms,
machinery, and process.--10 illustrations. 10336
X. TECHNOLOGY.--Cotton Seed Oil.--How cotton seed oil is
made, and the cost and profits of the operation. 10335
Improved Dobby.--An improved weaving apparatus described
and illustrated.--1 Illustration. 10333
Sulphur Mines in Sicily.--By Philip Carroll, U. S. Consul,
Florence.--How sulphur is made in Sicily, percentage,
composition of the ore, and full details. 10334
The Use of Ammonia as a Refrigerating Agent.--By Mr. T. B.
Lightfoot, M.I.C.E.--An elaborate discussion of the theory
and practice of ammonia refrigerating, including the
hydrous and anhydrous systems, with conditions of economy. 10337
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