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. By E. MERCADIER.--5 figures.
Constant vibrator.--The Electrical tuning fork.
Arrangement for testing electric piles.--Very rapid
electric tuning fork.--A vibrating micrometer 5824
IV. NATURAL HISTORY.--Our Origin as a Species. By RICHARD
OWEN.--The Neanderthal skull.--Differential characters
between the lowest _Homo_ and the highest _Simia_ 5825
The Aba or Odika. By Dr. W.H. BACHELER.--A remarkable
tree of West Africa 5826