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ELECTRICITY TO
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I ORTIMER E. COOLEY.
Dean of the Departmentof Engineering.

INEERS PLAN
ANNUAL EXHIBIT

On next Thursday and Friday, May 14
and >,, the second annual engineering
exhibit will be held in the old and new
engineering and the chemical building.
Last year over io,ooo visitors viewed
the displays shown in the various de-
partments, during the three days they
were open to the public. In an effort to
beat this record, the commhittees in
charge of this year's exhibit have pre-
pared displays more varied and numer-
ous than last year's. Every branch of
engineering will have an individual .ex-
hibit, showing the class of work done
by .the students. In addition, a number
of novel exhibits have been planned..
Visitors will be conducted through the
building by student guides, who will
also explain the different exhibits.
The exhibition will be open to the
public from early morning to i1:ou
o'clock at night. Contrary to an earlier
report, all classes in the engineering cte-
partment will not be ismissed, only
those classes with which the exhibit in-
terferes being excused. Full sections of
students will be working in the shops
during the exhibit, and students from
other sections are requested to be pres-
ent and help swell the number of ma-
chines in operation. All classes will re-
sume Saturday mornng.

CHEMISTS TO DEMONSTRATE
UTILITY OF THEIR SCIENCE.
Practical Application of Chemistry
Will be Shown in
Laboratories.
In the chemistry building will be '3ari-
ous exhibits showving the analytical. as
well as the practical applications of
chemistry. The - laboratories -will he
open, showing the various operations in
chenical analysis, organic synthesis. and
research work.
The various exhibits will include the
furnaces for assaying, brickmaking, and
heat treatment, as well as the electrical
resistance and arc type furnaces. The
means of measuring the high tempera-
tures with thermo-couples, optical pyro-
meters, and similar devices, will also be
on exhibition.
In addition to the above, a rotary ce-
ment kiln will he seen in operation, to-
gether with the various types of ore
grinding and crushing machinery, and
apparatus for measuring the tensile
strength and expansion of cement and
concrete.
Exhibitions of Thermite welding will
also be given, and it is planned to have
a miniature salt plant in operation. using
a vacuumni evaporator.
Other things of interest to be shown
will be the micro-metallurgy of iron and
steel; the operation of a filter press; the
different stages of varnish manufactur-
ing; the varying finishes obtainable with
the different kinds of varnish; moving
pictures of numerous industries, and
various other features.

FORE$TERS PLAN
VARIED EXHIBIT
The forestry exhibit will be on a
larger scale than last year, and many
new features will be shown. The same
general idea, however, will be followed,
that of attempting to show what the
United States in general, and the state
of Michi an in particular. has in the
wv of forests. The conditions which
prevail in our timber laInds and what
'cielntitic forestry can do and is doing
with them, will he dwelt upon.
The exhiiiit as a whole will be made
up of several small exhibits. each repre-
sentative of some branch of forestry.
One (displav will show a miniature forest
nursery. properly laid out. 'Ihis same
exhibit will show specimens of bark,
conres seeds, seedlings. and wood sec-
tions of several o( our most important
trees.
In the forest prodliicts exhibit will be
shown a multitude of articles which are
made from wood. demonstrating the im-
portant part that trees play in our every-
lay life, IHe;-re. also, will be seen speci-
milens of lumber which have been treated
with preservatives to prolong their na-
"ural life.
. , at,: e that is expected to attract
much attention is a model constructed to
show the effect of forests in preventing
the erosion of thie soil. In contrast to
this will be displayed a-miniature repre-
sentation of a bare mountain slope.

Electrical Department to Demonstrate
Uses of Recent Inventions
in This Field.
WILL SEND WIRELESS FLASHES..
The electrical exhibit will be divided
this year into the electrical and the
physics department. The combination
of these two will make an important
feature of the engineering exhibition
The electrical department will be sub-
divided into five distinct exhibits, tele-
phone and wireless, lighting, railroad
signals, high tension transmission, elec-
trical laboratory.
In the telephone and telegraph labor-
atories will be displayed various types of
apparatus used in numerous phases of
electrical communication,. such as the
university private exchange, where one
will see the latest types of the modern
telephone office in operation. The auto-
matic switchboard, illustrating the latest
development of automatic telephony,
will be shown. TJhe university s5-kilo-
watt wireless station, which for the
benefit of visitors will furnish free wire
less service over a radius of goo miles,
will be a feature.
The lighting will be the most novel
of all the exhibits. All kinds of electric
lights will be displayed, from the oldest
to the most recent kind. Certain booths
will show the difference in the effect of
the lamp, the carbon filament lamp, and
the most efficient incandescent lamp, in
commercial use today. The light effects
of the diagonal walk and the engineer-
ing arch will -be worth a visit in the
evening.
The electrical railroad to be exhibited
will be a model of the direct current,
third-rail type. There will be about 500
feet of track upon which will run a lo-
comotive and trailer. The power will
he supplied to the third ral by a motor-
generator set up in the laboratory. Th
machinery in the laboratory will be
grouped to illustrate a central station
plant and a sub-station. A working
model of the automatic semaphore sig-
nal system will be installed in connec-
tion with the railroad.
in the high tension display, there will
be breakdown tests of all kinds of in-
sulating materials, a short high tension
single-phase line, to show the corona
effects, and a horn gap for illustrating
its use in lighting.
The laboratory will contain all modern
types of alternating and direct current
gererators, together wth some of the
latest rotary converters aid induction
motors. These machines will be under
commercial tests during the entire ex-
hibit.
Water representing rain will play upon
the two areas, demonstrating the advis-
ability of keeping our mountain slopes
covered with timber.
In the wood technology laboratory,
tests to determine the comparative
strength of wood, concrete, and steel,
will be conducted on the testing ma-
chines.
Lectures on forestry, along popular
lines, and illustrated with lantern slides,
will be given continuously throughout
the two days of the exhibit. These will

One of the, prominent
engineering exhibit will
mechanical departnent.
part of this display will
ical laboratories, which
floors in the north wing

-t
features of the
lbe 'that of the
The greatest
be the mechan-
occupies threw
of the new en-

NAUTICAL ENGJINEERS PLAN
TO DISPLAY BOAT MODELS.
Complete Designs of Different Kinds
of Vessels Will be Shown in
Drawing Room.
The exhibit of the departnent f
naval architecture and marine engi neet
ing will consist of two parts-the draw-
ing room and the naval tank. The
draughting room exhibit will lie found
in room 33, and vill consist of complete
designs of cargo and passenger vessels,
yachts, motorboats, marine engines, boil-
ers, and propellers, prepared by the stu-
dents. Models of different types of ships,
illustrating stream line flow, will be on
exhibition.
In the room adjoining the naval tank
the d(evelopinent of a paraffin wax model
will be demonstrated, showing the cut-
ting, shaping and finishing, preliminary
to testing. Visitors will he allowed to
ride on the car which spans the experi-
mental tank, to observe the manner of
conducting tests. The new propellor
dynamometer which is soon to lie used
to determine the thrust and torque of
model propellors, may also be seen.
MECHANICS TO
}SHOW MACHINERY
Department of Mechanics Will Furnish
Feature of Engineering
Exibtit.
ILL DISPLAY ALL A PPI ARA TIUS

The display of the civil e
promises to be one of the most
tive and interesting parts of the
Besides the special departmen
tures, there will be several lecti
illustrated talks by the different
sors, on general civil engineerin
lems. Several films of motion
which will last from 15 to 20
each, showing details of road c
tion, have been secured and wil
plained to the visitors .by the :
It is hoped that an arrangemen
made hetween the different depa
so that an illustrated talk of so
will be going on at all times.
One of the most interesting
from the visitor's standpoint, v
model of the Broadway Chamber
ing. New York. The comple'
structure will be shown in ever
and the method of erecting suc
ings will be explained by the stu
the structtlral engineering cour:
model building will have 14 sto
stands 6 feet above the ground.
The hydraulic department
structing a miniature power plan
harbor. The power plant is Joc
a section of the Huron River
has been accurately reproduced
anti power will be actually prod
run a small machine. The har
be of the latest design, show
wharves and the breakwatersc
forced concrete. A series of lest
irrigation and water projects in tl
will bec given by Prof. King, ,wl
auithority on this 'subject.
A small model of Camp Davi
ing prepared by the students of1
veying department. Camp Dayi
suimme7r camp of the senior c
! incers. E!ivery detail of the ca
be shown, including tents, diving
and harbor. Professor Johnslt
give an illustrated lecture on th
showing the development from
tents to its present capacity of
dents.
TIhe railroaders have the mo
plete exhibit of track, ties, ball;
rail joints of any school in the
and their booth will be an ins
one to people who are interested
work. Mr. A. R. Bailey is ende
to bring here some of the exl
the National Railway Applianc
venition, -which incluides the mo(
coaling station run by gravity.
A miniature filtration plant i
operation will feature the sanit
hibit, and visitors will have thef
of watching the impure water
upt in a few minutes. The sew:
poisal plant will he reproduced
as well as a modern settling bas
People interested in the goo
movement will find the highway
interesting. Students are buidi
iature models of different types o
Prof. Cox has obtained ac
set of road tools used in the a
tion of miodern hzighways.

EXHIBIT

INCLUDES

gineering uilding, besides a sul-base-
ment and a mezzanine floor.
Every machine and piece of apparatus
in the laboratories will be running dur-
ing the exhibit and students will be in
charge, who are able to explain the use
and purpose of each. In this way, thous-
ands of visitors whi he able to appreciate
what the mechanical engineer can do,
Among the interesting machines In
the laboratory is the 16o-horse power
water wheel, directly connected to a too
kilowatt Fairbanks-Morse alternatoi.
The complete apparatus, including the
switchboard and exciter, makes an ideal
example of a commercial hydro-electric
unit. Among other interesting equip-
ment, is a 'liquid air machine, an am-
monia refrigerating plant, and a new
'fire apparatus., The fire protection con-
sists of two Rees-Roturbo centrifugal-
pumps, driven by zoo-horse power Fair-
banks-Morse variable speed motor. It
delivers 1250 gallons per minute against
a pressure of 125 pounds. The air from
the compressor will be used for demon-
strating several machines, such as a rock
drill air pump and riveter. .
Models and drawings of original work
by -members of the faculty and some of
the students will also be shown. Along
this line is the notable work of Profes-
sor Zowski in water turbines. Too much
stress cannot be laid upon this subject,
as the water turbine has done more for
the development of this country than
any other one machine.

MOTIN PICTURE
TO BE DISPLI
Clvil 1,ngineers Will. .Show
Films on Constructlon
of Roads.

TEMPLE THEATRE
THE COOL THEATRE
Presenting the following magnifcient Photo Plays for the coming week:
Monday, May 11
'The Double Shadow'
Wednesday, May 13
'The Award of Justice'

I

Sundaes and Sodas
Are Our Specialty

Made with the highest Quality Ice Cream
home flade Candies Fresh Daily
Visit Us and Be Convinced

The Real Comfort of
the Home.
Lies in its Furnishings
Everything that is needed may be hi
here. Sole representative for Limberts A
and Crafts goods, and the celebrated Whi
all Rugs;
We also sell many of the well known Gra
Rapids goods

Friday, May 15

'Three Bags of Silver'
The 6th Story of the Adventures of Kathlyn
5c ADMI SIOcN

c

MARTIN HAL

302 SO. IAIN STREET

Furniture, Carpets,

I

e Days

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