The sun. [volume] (New York [N.Y.]) 1833-1916, 1892-04-10

with thu. new pipo y tends TO close Animper:
twenty pounds to the SQUARE, inch has BECOME
tight 81 fity and r rSmaincd, 60 M, ~ to S58
SG sns i'e one and ND but onoeah sat
stiffness IS %aSSr a. strsns Direct and obSa
geested. also. for service us q railroad tie.
hS os2 e OF sSsn
among hundreds that might DO named. q. 81:
In fashionips. In very interesting class II
cases tool, or y pnrt OF MACHINE. as IL
improved In dusisn,nr ii" tho teeth of wSseis
the, comrl icatcd curves arc often struck out
%s' %SssSm Ssss S shs s
which will push and not grind it's mate With.
IS n Ssw s sasSSr
actual wear Again. In somewhat the same way
through pipe, gives valuable hints as to how
It's bonds may DO changed for the better. e0.
about on q beach. or IS dashed along a rapid
stream. AZ its corners tho most exposed parts
notion ana last seSo tSs p %Sfa worn IL
Tie shape which offers tho smallest opposi-
which It has had to Withstand have hS moulded Il
to shS form a 81 least resistance Builders Of
ind outlines giving them tho highest s's speed.
son%sS no max. Hs them %ods n WaS uss
It in, Frame. and measure the eiiorS
n'f rSSRE to S %d at Ts EOps s
firm Of builders in Dumbarton. Scotland. !
s %Snd .sa mot 30 set,sT to %lbS
through mixture Of water and sand3 The
form as modified by the abrasion might sug:
resistance rs a ship.
HOW OXYGEN HAS BEEN cHEApENEp.
- In chemistry ingenuity can have as free play
bsen Sy se
e esf msa sns e fs nse pr Il:
5arytn is 5s%tef to i.1oo r'' EahrenheIt no Il
W 'nS Se Of au ss S
Fen Fen thus combined was driven Of by raising
RSsss oSy' AH e Is ' sap en-
sedsd by heating tho barium compound to
which sxposcd po Sa sas e. the
ea nsn tho ssrs up hs anu S sS
and syhaustine tho Dir performs q round 81
tho four hours formerly required This In
genious Improvement serves as n type Of
s T""t tie ns in sash the &bd
Is adequate to prescribed task.
THE EDUCATION OF INGENUITY.
As we Observe ingenuity at work In these
apon mankind. the questi on arises e Can f tSs
Va ihNti,tloh w VI course
ineommuniclble somewhat born with a man;
form it. direct it to needed work. Keep It from
wasting itsclf on what has already been done,
yes 3nd a sfsery Ws ssvs
yet no distinctive college Of Invention as We
II "a hStitutGs OF technology md academies Of
EeElected in our schools. 1t has become clear
to the educators of this country that tho most
valuable asset America Possesses Is neither
ler iron orc nor her wheat harvest. but the
dormant ion satnnety q her children for inysn
day educational methods arc. therefore. more
md more addressed to pupils original iao-
schoiars; but having given =, child the ele-
next stop by an independent effort It OF re.sos
Dr. Judgment.
Z - - INTENTIONAL GEOMETRY.
One Of the pioneers In this creative Wow OF
we the aiser 81 Rosbs
M or M miiel ot eHantte. i,s taught geoia.
Euei i'd along the we'll travelled paths. but set >
! { RI MS pupils problems Of his own devlsing.
nsoluble. and very often problem could be
,o l in more WAYS than one. His .'Inven-
nto somo Of tho best schools in America, has
o9 bnb precursor nn 81 now pan OF teaching.
'hanies. physics; and chemistry. but extends
fH' af this a nsa
ion is. that Just as a pupil gets q better
ai OF tbou wheel and axle BY and
r y even y sesius pictures Of them. SO does
sa won % e the
lis own hands, tracing out the courses Of its
'reat riyers and marking the sites OF its chief
ducation, however wise. can i'm plant tho In
n!ii;tions the RI 5rs9nrceiulness Of such men
mental elasticity call out the best, because the
;ould earn, the stigma OF duiness. v really
hargeable to the teachers who'ncglected to
nd out what was in him and draw 1t out at
A plan ofeducation that develops tho creative
lculty which every scholar possesses In some
nat faculty exists in notab 10 degree. From n' g
enerati99 Of young people educatedt to respecs
Q expected decided Increase in tho proper.
on OF inventors OF mark. evon IL tho men Of
or now, that manual training is to tho fore not
My will suggestions for the exercise OF In.
leir validity, will BIO commoner. And many q
lpltai lde3 has been born only to do from
Ick OF skill to carry IL to experiment.
HOW INGENUITY Is TRAINED IN NEW YORK.
An excellent example Of what can. be done
Ne New ss9 Gsss TrKnp a Tesess
sSrns a. %nG n sesool
IONS throughout tho land. Here the men
aching onc Cd aro shown how i'm Dor portant prin-
pies Of mechanics. physics. physiology. even.
IN BIO illustrated by home made appA-
titus quite within tho skill OF any one to
instruct valve which permits the escape
: Dir and water In pumps and resists
er inflow Is made by simply cutting q
lort slit engthwise IN bit Of rubber tubing.
tumbler coated with strp OF tin foil be-
ming u common steel magnet to n series Of
nall electroI,nagnots fastened on tho ,spokes
ate wS wtb IhG process OF Sreathi t, y Illus
in leather. and q piece OF rubber cloth. such
dentists use. Tho lamp chimney stands for
9sed bya stopper. from which hangs the
tle bag. partly filled with air. repre- senting
o lungs. Over the lower end OF the chimney
. rubber cloth Is securely tied. to simulate
o diaphragm. When tho rubber Is seized boz
'een Anger and thumb it enlarges the space
tho chimney. and tho little lung bag
comes inflated When the rubber Is pushed
t OF eXhalntion. Prof. Woodruff. who has
yised hcso and other ingenious models. has
ceiynd from his students additions to them