The daily sentinel., 1905-03-07
Prof. CIarke's Lecture

Those who failed to hear the il
lustrated scientific lecture at the
Conversational church last night
missed an entertainment of the rar-
est value and of the highest educa-
tional worth. The audience last night
was a large one. the single admis-
sion sale was perhaps the largest of
any number yet and very few of the
season ticket holders failed to at
tend.
Prof W. j Clark of New York, is
a scientist Of national reputation and
an electrical engineer of long exper-
ience. He is most entertainiug
talkcr, and he avoids in his lecture
the technical terms as far as he pos
sibly can. The lecture was disap-
pointing to none; it met every ex-
pectation.
a long folding table of oak held
electrical apparatus Of all kinds. and
the demonstrations and experiments
that followed a series of stereoptlcon
views were really marvellous.
The lecture opened with a short
talk on the famous scientists of the
modern times and discussion of
their works The stereopticon views
used in illustrating this talk were
very fine.
Mr.. Clark exhibited a small tube
of that wonderful substance, radium,
and gave a clear explanation of its
marvellous power. One Of the most
interesting features of the lecture
was the demonstration of the X-ray
machine. Prof Clark carries one of
the most complete X-ray outfits ever
Prof. Cole of the high
school, in response to a call for vol
unteers from the audience, went on
the platform and was given an op-
portunity to test the power of the
N-ray. He could plainly see the
bones Of his hands through heavy
substances.
The new process of electric weld f.
ing which is rapidly taking the place /.
of the old blacksmith shop, was
shown in fun operation. The pro-
lessor explained how it was now easy
to weld together such metals as brass
and iron and silver
The wireless telegraphy demon
strations We're among the most in |
teresting features of the entertain |
ment. The lecturers wireless teleg-
raphy equipment is one of the finest /
ever constructed and is complete in !
every detail The experiments last /
night were most successful. The |
is so perfectly arranged |
that it was carried around in the
audience. and everybody who desired |
to do so was given an opportunity to
press the button and transmit signals
to the platform. A press of the but
ton by n person in the crowd and all
electric bell on the stage would ring.
A miniature locomotive was started
and stopped at will by the transmit
ter. lights were lighted and turned
Off in the same marvellous manner,
a phonograph was started by the
telegraphy system. Prof.
Clarl,'s explanation of the wonder
full system was clear to all.
Many experiments in high tension
electrical currents were given. The
professor produced with his appara-
tus a tension of more than one mil
lion volts.
There were many other interest
ing features, and the large audience
kept in close touch with every move
of the lecturer and his assistant.
These demonstrations and explain
ations of the wonders of modern sci.
ence. as given by Prof. Clark, con
stitute a great entertainment Last
nights attraction was thoroughly
satisfactory to every patron of the
lecture course.
The governing board OF the Car