TECHNOLOGY AND CHEMISTRY.--Apparatus for Manufacturing
Gaseous or Aerated Beverages.--11 figures.--Bicarbonate
of soda apparatus. Generator. Washer.--Suction
pump.--Saturator.--Apparatus for using carbonate of
lime.--Apparatus completely mechanical in operation 5815
Detection and Estimation of Fusel Oil 5816
On Silicon.--Curious formation of silicide of platinum 5816
Stannous Nitrates.--The formation of explosive
compounds in machines by the corrosion of bronze and
tin solder 5816
Metallic Thorium. By L.F. Nilson 5816
Friedrich Woehler.--Obituary notice of the great German
chemist 5816
Apparatus for Printing by the Blue Process. By
Channing Whitaker.--3 figures 5820
III. ELECTRICITY, LIGHT, HEAT, ETC.--Spectrum Gratings 5822
A New Pocket Opera Glass.--4 figures 5822
Atoms, Molecules, and Ether Waves. By JOHN TYNDALL.
Action of heat and light on molecules.--Heat as an
agent in exploring molecular conditions.--The results
of a recent incursion into the extra-sensible world
of atoms and molecules 5823
Apparatus for Measuring Electricity at the Upper
School of Telegraphy.
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