New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1864-07-13
SCIENCE AND Ant.
American Institute Polytechnic Assoc
citation.

MI u. ID iNoOI WIN tue hlu VI ulaRThDs
an experiment made by him in relation to tho fow OF
water through irregular tubes He constructed tube
OF tin 80 inches long and n inches In diameter With.
In this tube were soldered IL diaphragms discs at
regular distances from each other. In each circular
disc There hole iive-eighths OF an Itch In Diane
ter the center of which the center of the disc.
way from oh disc the tube perforated the
upper side by very small hole One end of this tube
was inserted into bukhead about nine feet below the
surface of the water The object of this apparatus was
to the retardation OF the water. in passing
through the discs, by OF the hight OF the Jets
sent through the small holes the top Of the tube The
Jet from the first hole about two feet high; the next
et was lower, and so to the last hole, from which
the water barely oozod out. The in decrease In
hight was directly the number of discs inserted
that is the water after passing ten discs gave Jet
only one.ninth as high as after passing one.
The CHAIRMAN remarked that the principle OF reard.
alton here illustrated, had been applied to the pisons
OF pumps, by cutting around tho piston a series OF
grooves, close To each other thus forming what is
called water packing. 1t said however, not t.
work well at first expected There Is need OF
more light on the action Of wnter in tubes The old
experiments Of Ventnri rGappear in oil new works on
hydraulics with but little additional information in the
same direction Not long since, case occurred ut the
jersey City Water Works relating to tho subject now
under discussion. II became necessary to lay down,
under the ackensack River. FOR the distance Of LOCO
feet another main pipe Of 80 inches internal diameter.
Mayor Cleveland Of Jersey City. then Water Commits
sioncr made important experiments to prove that
yS w pECn bo ppe be enlarged on the curves
Doubtless the member from Jersey now present could
enghten the Association on this subject.
MI DIXON SAID the proposition WIS 10 unuer tne
river pipe which would adjust itself to the bottom by
means OF from IA TO Is movable joints. The position
Of the pipes either side OF joHt may be illustrated
by surprising two common clay smoking pipes to be
laid down in opposite directions so that the mouths OF
their bowls would together these being fastened
by collar they would be free up down. and
thus such pipes would adjust themselves 10 the bed Of
the river Mr. Cleveland objected to this plan on the
ground that the ppes so laid would not deliver the
quantity required because the curves would impede
the flow Of the water. In order to remedy this the
contractor proposed 10 enlarge the pipe a. the curves
from 80 Is inches in diameter the pipe being brought
down 20 its original size between each curve. This
proposition was approved by several prominent engi-
neeis Mr. Cleveland objected to these enlargemcnis;
he believed they would increase rnher than diminish
the evil complained Of In order TO demonstrate his
statement he made the following experiments: First,
no constructed straight pipe OF lead. 50 inches long
and and hall inches internal dlafneteri
second. he made another pipe extending the same
distance and containing two curves. so as
TO carry the water in q direction perpendicular
TO lis first course then ngain in first course thus turning
two right angles The diameter Of the ends Of the pipe
Il inches and that II the carved part was HIP
inches Parallel lines drawn through the center OF the
two ends were just 81 inches apart Third, he con-
srnctcd another pipe containing four curves tie two
curycs additional TO those In tie second pipe were 10
bring the water back so that rs entrance and
were in the same right line The curves n The third
pipe were Of the diameter with those IN the sec
ond pipe The pipe between each two curves MS wen
as al each end was inches In diameter These pipes
were constructed with the greatest care; the curves
were fitted in halves wooden forms. ana soldered
the outside. the inside being made 50 smooth as TO
pared 5 feet g inches in diameter at the top
and feet deep hole We; was, made on . The
pipes was In turn fitted The object being
10 discharge precisely The same quantity Of water
through each pre two marks were made on The inside
OF the tank The upper one being The hight OF hc water
nj the Of the discharge. and the lower
one The hight at the close The pipe on being inserted
was closed at tie end. by clay placed on the hand
which could be instantly removed on the -isiSl beng
water In the tank had reached the lower mark. The
expc. Of dlschargng through tie several tubes
were made iih great care and nerward repeated TO
verify their accuracy and the following Is the result
The sans quantity II water passed
Through the straight pipe In 2r secf-iis
Through the one point pipe IN 81 seconds
Through the two Joint pipe Ia 81 seconds.
From fhs II nppoars that the Increased time required
for The ho~ through The second PIPE was over 80 per
experiments decided the question anu tho proposed pan
was abandoned
NEW LOOM.
Mr. OvHRroS stated that a new loom wa. IN operation
In this city which the ordinary heater dispensed
with. motion is produced In when the shuttle ~
carried backward and faraard by circular bcaier
placed between each thread ~ that the transverse
thread forming the wool filing Is pressed up ny
spring fast the shuttle moves Inc objection 70
tie ordinary loom is the Conclusion made by the bentc
These conclusions great that where many looms
are placed building they have the effect Of con
ccntrated blow. thus shaking the whole structure.
Buildings containing weaving apparatus must there.
fore be made with unusually strong foundations ana
heavy walls. The oljec. Of The new invention - to
only after the shuttle has passed beyond the warp ny
beatcr which operates Continuously with the shuttle
thus accomplishing by selica OF pressurcs what was
formerly done by a blow. Tie new machine seemed 10
opcric with great precision. Tho speaker Invited the
members TO inspect The in practical operation III
II has the merits claimed for H. entire change IN the
| system OF weaving viii be effected
! NEW STEAM EXPERIMENTS.
| DIR HOWELL exhibited some indicator cards. made by
the new experimental steam engine az the Meropohtan
Mills and said the members Of the Association would
soon be- invited 10 witness It's practical operation.
The following interesting items OF scientific inteHi
gence were read by the cHAiRsAs
on vEGRrATI0S IN DARKNESS.
NJ. BousslSGAULr. In communication TO tho french
Academy Of Science read May H. gives nccoun,
OF experiments which prove that the growth OF plant
in the dark supported entirely at me expense OF The
Phosphorus AND SULPHUR.
! NJ IrMorsR in a memoir to the French Academy
gives the chemical characteristics of compound maze
by heating phosphorus and sulphur and di'solVing
them In the b.snphido Of carbon. The compound sep
-atcd mas the formula of p s. which Is Invariably
produced whatever may be the quantity Of each element
BROMIDE or POTASSIUM.
Henry HEIRlND gives, IN The London Lsncr. several
cases in which the Bromide OF Potassium used, as
first recommended TO him by Dr. Brown selnafd, Tor
the purpose Of producing drowahe.s IL seems 20 DC
beneficial IN those IN which the nervous clement
predominates AID where opium and ITS preparations
fill 10 produce any good result.
y INPnEE.
This Northern sugGrcaue has been cultivated IN
Csyuga Couaiy. in this State The yield per acre was
from III to $50 gallons OF strip.
RATTAN sPLiNTs
These spnts havo been invented and used IN England
for the treatment Of fractures and other uiies where
the use OF such appliances ere Indicated. They are
constructed Of from four 10 seven pieces OF cane cut OK
equal length and fixed parallel to each other by means
of copper passing through The sides AT given as
tanccs The advantages Of these splinls oro their
ligitness and 1cxibity, admitting dir between the
rods, and thus favoTing the functions Of the Shin