I. BOTANY.--New Race of Dwarf Dahlias.--A new and valuable
flowering plant, with portrait of the introducer.--1 illustration.
II. CHEMISTRY.--Carbon in Organic Substances.--By J. MESSINGER.--
An improved method of determining carbon by inorganic
combustions.--1 illustration.
III. CIVIL ENGINEERING.--A New Integrator.--By Prof. KARL
PEARSON. M.A.--An apparatus for use for the engineer in working
up areas, indicator diagrams, etc.--4 illustrations.
Best Diameter of Car Wheels.--The size of car wheels from the
standpoint of American engineering.--A plea for a moderate sized
wheel.
Improved Overhead Steam Traveling Crane.--A crane constructed
for use in steel works.--Great power and range.--3 illustrations.
Some Hints on Spiking Track.--A most practical article for telling
exactly how to conduct the operation on the ground.--1 illustration.
IV. ELECTRICITY.--Electrical Laboratory for Amateurs.--By GEO.
M. HOPKINS.--A simple collection of apparatus for conducting a
complete series of electrical experiments.--17 illustrations.
The Action of the Silent Discharge on Chlorine.--How an electric
discharge affects chlorine gas.--An important negative result.
V. ETHNOLOGY.--Some Winnebago Arts.--An interesting article
upon the arts of the Winnebago Indians.--A recent paper before
the New York Academy of Sciences.
VI. MEDICINE AND HYGIENE.--The Philosophy of Consumption.
--By Dr. J.S. CHRISTISON.--A review of the present theories of
consumption, and the role played in it by its bacillus.
VII. MUSIC.--Spacing the Frets on a Banjo Neck.--By Prof. C.W.
MACCORD.--A most practical treatment of this subject, with full
explanations.--1 illustration.
VIII. ORDNANCE.--High Explosives in Warfare.--By Commander
F.M. BARBER, U.S.N.--An elaborate review of modern explosives
in their applicability to ordnance, etc.
The Experiments at the Annapolis Proving Grounds.--The recent
tests at Annapolis described and illustrated.--Views of the
projectiles, plates, etc.--3 illustrations.
IX. PHYSICS.--Aræo-Picnometer.--An entirely novel form of hydrometer,
of very extended use and application.--1 illustration.
X. TECHNOLOGY.--Fabric for Upholstery Purposes.--Full technical
description of the method of producing a new and characteristic
fabric.--1 illustration.
Gaseous Illuminants.--By Prof. VIVIAN B. LEWES.--Continuation
of this important article, treating of the water gas and special
processes, with analyses.
Glove Making.--Early history of glove making in America.--Its
present aspects and processes.
Reversible Ingrain or Pro-Brussels Carpet.--An imitation of
Brussels carpet on the Ingrain principle.--Full description of the
process of making.--3 illustrations.
The Manufacture and Use of Plaster of Paris.--An excellent
treatment of a subject hitherto little written about.--Full
particulars of the manufacturing process.
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