iver he used a sensitive metallic coherer, which in itself led to
new and important discoveries. When electric waves fall on a loose
contact between two pieces of metals, the resistance of the contact
changes and a current passes through the contact indicating the
existence of electrical oscillations. Dr. Bose discovered the surprising
fact that with potassium metal the resistance of the contact increases
under the action of electric waves and that this contact exhibits an
automatic recovery. He found further that the change of the metallic
contact resistance when acted upon by electric waves, is a function of
the atomic weight. These phenomena led to a new theory of metallic
coherers. Before these discoveries it was assumed that the particles of
the two metallic pieces in contact are, as it were, fused together, so
that the resistance decreases. But the increasing resistance appearing
for some elements, led to the theory that the electric forces in the
waves produced a peculiar molecular action or a re-arrangement of the
molecules, which may either increase or decrease the contact resistance.

--_Pioneer_,--16-1-1916.

HINDU UNIVERSITY ADDRESS

The foundation of the Hindu University was laid by Lord Hardinge on the
4th February 1916. "Many striking addresses were delivered on the
occasion. Professor J.C. Bose in his masterly address went to the root
of the matter and pointed in an inspiring manner what should be done to
make the Hindu University worthy of its name. He deprecated a repetition
of the Universities of the West." He said:--

In tracing the characteristic phenomenon of life from simple beginnings
in that vast region which may be called unvoiced, as exemplified in the
world of plants, to its highest expression in the animal kingdom, one is
repeatedly struck by the one dominant fact that in order to maintain an
organism at the height of its efficiency something more than a
mechanical perfection of its structure is necessary. Every living
organism, in order to maintain its life and growth, must be in free
communion with all the forces of the Universe about it.

STIMULUS WITHIN AND WITHOUT

Further, it must not only constantly receive stimulus from without, but
must also give out something from within, and the healthy life of the
organism will depend on these two fold activities of inflow and
outflow. When there is any interference with these activities, then
morbid symptoms appear, which ultimat