--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.
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