I. ENGINEERING AND MECHANICS.--Bridge over the Blaauw
Krantz Ravine, Cape Colony.--2 engravings.
Torpedo Ships.
The Gas Engine.--By DUGALD CLERK.--Combustion engines.--First
cylinder and piston engine.--Watt's experiments.--First gas
engine.--Principles of the gas engine.
Rapid Construction of the Canadian Pacific Railway.--By E.T.
ABBOTT.
The Osgood Mammoth Excavator.--3 figures.
Capstan Navigation on the Volga.--4 figures.
Steamboat Equipment of War Vessels.--With engraving of winch
for raising and lowering torpedo boats.
Improved Steam Trap.--1 engraving.
II. TECHNOLOGY.--Critical Methods of Detecting Errors in Plane
Surfaces.--By JOHN A. BRASHEAR.--11 figures.
Photometric Standards.--9 figures.
Bleaching or Dyeing Yarns and Goods in Vacuo.--1 figure.
On the Moulding of Porcelain.--By CHAS. LAUTH.--Moulding by
pressure of the air.--Moulding by vacuum.--Drying the moulded
pieces.--2 figures.
Photo-Tricycle Apparatus.--1 figure.
A Photo Printing Light.--1 figure.
A New Actinometer.
Astronomical Photography.
Electricity as a Preventive of Scale in Boilers.
III. DECORATIVE ART.--Alphabet designed by Godfrey Sykes.--An
engraving.
Old Wrought Iron Gate.--An engraving.
IV. GEOLOGY.--The Organization and Plan of the United States
Geological Survey.--By J.W. POWELL.--A topographic map
of the United States.--Paleontology.--Chemistry.--Physical
researches.--Statistics.--Library.--Publications.--General
geology.--Economic geology.--Relation of the general survey
to the State survey.
V. BOTANY, ETC.--The Sunflowers.--Annuals, perennials, etc.--11
engravings.
Lye's Fuchsias.--1 engraving.
VI. HYGIENE, ETC.--Brief Sanitary Matters in Connection with
Isolated Country Houses.--By E.W. BOWDITCH.
Sanitary Cooking.--By V.L. OPPENHEIMER.
Time required to digest Different Foods.
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