--By H.N. WARREN.--A simple
apparatus for this purpose described and illustrated.
1 illustration. 10117
The Arrangement of Atoms in Space in Organic Molecules.--A
review of Prof. JOHANNES WISLICENUS' recent theories
on this abstract subject. 10117
The Isolation of Fluorine.--Note on this last isolation of
an element, with the properties of the gas. 1 illustration. 10117
V. ELECTRICITY.--Observations on Atmospheric Electricity.--By
Prof. L. WEBER.--Abstract of a British Association paper
on this important subject. 10114
The Menges Thermo-Magnetic Generator and Motor.--The direct
conversion of electricity into heat; the generator fully
described. 5 illustrations. 10113
VI. ENGINEERING.--An Investigation into the Internal Stresses
Occurring in Cast Iron and Steel.--By General NICHOLAS
KALAKOUTZKY.--First installment of an elaborate paper,
giving theoretical and experimental examination of this
subject. 2 illustrations. 10105
Hargreaves' Thermo-Motor.--A new caloric engine.--Its
construction, theory, and cylinder diagrams.
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