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The Generation of Steam and the Thermodynamic Problems
Involved.--By WM. ANDERSON.--Apparatus used in the
experimental determination of the heat of combustion and
the laws which govern its development.--Ingredients of
fuel.--Potential energy of fuel.--With 7 figures and
Planetary Wheel Trains.--Rotations of the wheels relatively
to the train arm.--By Prof. C.W. MACCORD
The Pantanemone.--A New Windwheel.--1 engraving
Relvas's New Life Boat.--With engraving
Experiments with Double Barreled Guns and Rifles.
--Cause of the divergence of the charge.--4 figures
Improved Ball Turning Machine.--1 figure
Cooling Apparatus for Injection Water.--With engraving
Corrugated Disk Pulleys.--1 engraving
III. TECHNOLOGY.--A New Standard Light
Dr. Feussner's New Polarizing Prism.--Points of difference
between the old and new prisms.--By P.R. SLEEMAN
Density and Pressure of Detonating Gas
IV. ELECTRICITY, LIGHT, ETC.--Early History of the Telegraph.
--Pyrsia, or the system of telegraphy among the Greeks.
--Communication by means of characters and the telescope.
--Introduction of the magnetic telegraph between Baltimore
The Kravogl Electro Motor and its Conversion Into a Dynamo
Electric Machine.--5 figures
Bornhardt's Electric Machine for Blasting in Mines.
Pritchett's Electric Fire Alarm.--1 figure
A Standard Thermopile
Telephonic Transmission without Receivers.--Some of the
apparatus exhibited at the annual meeting of the French
Society of Physics.--Telephonic transmission through a
chain of persons
Diffraction Phenomena during Total Solar Eclipses.--By G.D.
V. BOTANY AND HORTICULTURE.--Gum Diseases in Trees.--
Cause and contagion of the same
Drinkstone Park.--Trees and plants cultivated therein.--
With 2 engravings
VI. MEDICINE AND HYGIENE.--Miryachit.--A newly-discovered
disease of the nervous system, and its analogues.--By WM. A.
VII. MISCELLANEOUS.--Turkish Baths for Horses.--With
* * * * *
FAURE'S MACHINE FOR DECORTICATING SUGAR-CANE.
The object of the apparatus shown in the accompanying engraving is to
effect a separation of the tough epidermis of the sugar-cane from the
internal spongy pith which is to be pressed. Its function consists in
isolating and separating the cells from their cortex, and in putting
them in direct contact with the rollers or cylinders of the mill.
After their passage into the apparatus, which is naturally placed in a
line with the endless chain that carries them to the mill, the canes
arrive in less compact layers, pass through much narrower spaces, and
finally undergo a more efficient pressure, which is shown by an
abundant flow of juice. The first trials of the machine were made in
1879 at the Pointe Simon Works, at Martinique, with the small type
that was shown at the Paris Exhibition of 1878. These experiments,
which were applied to a work of 3,000 kilos of cane per hour, gave
entire satisfaction, and decided the owners of three of the colonial
works (Pointe Simon, Larcinty, and Marin) to adopt it for the season
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