New-York tribune., 1867-05-31

THE POLYTECHNIC Branch OF TIE AMERICAN IN
srITrrE-There was meeting Of the POLYTECHNIC
Branch Of the American Institute last evening at theH
room In the Cooper Institute building professor
Tiluan presided Among the various subjects 3ICusD'
up FOR discussion We're tue cIeosothg Ui NJ
the question OF steep grades Ol TdiIoaur
The preservation Of meat. 1t appears that IN Scotland
lately railroad sleeper was taken up Wi1ch "..I I
slightly dlscoored and sneled strongly OF eIeosote
4 very Interesting discussion was bad IN reicrehce
op 20 ubon to be constructed between Vera Cruz end
Mexico viii contain the steepeSt ralloau einue ~ zoo
world In distance Of $50 miles ap elevation OF eV
feet VIZ DC u1So'1 thv' hi viii De 5sI5 feet Of
rTade II Mi he OF Interest 10 for certainty that
nearly all th6 preparation known rs meers9han rs m ~
while the genuine article Is beng extracted and known
as QSgo, From what could be gathered from the ob-
Gently Invented and which consists in using, with
pressure OF lS0 pounds hypoc oi $500 ls5
would large sum per onnum by its adoption Ihe
lec Of Electric lights believed to be OF great I'M
porancc on account ots being eosdeled ,c
avoidance Of collisions at sea or ~ hlpOfs Inc fcuch
yacht Jerome Napoleon lately cxpcrmented IN this mat
ter The Invention used consists ol an epso, ~ t a
IL which the light placed In the foc undergoes three re
direct pencn OF rays IL Is intended 10 use
light condensers ON trial beside the ordl,
nary rejecting apparatus An!nyentlon Tor pressing
meat and in this way preserving IL, also explained
but the apparatus for accomplishing the end IN view is
old one well known TO many OF the members as being
thoroughly INADEQUATE ana was nghtH ana essy Jus us
posed of. new water meter next enpoyed INC atlen
that all other business which was TO follow aspreclnded
Tho meter Is the invention OF James CoehIane OF thls
ctv wnO Ia explaining it, principal features last even
ing said he believed that It's general adoption would
save the owners Of property IN this city $4,000 Day
This idea, OF course all expenses incurred Dy
the introduction OF the meter would be borne 10y the
taS payers ~ general did not receive very much en-
coaragenent The object OF the meter IS to measure
with accuracy whether the flow OF water he RAPID or
extremely slow rather 20 record the quantity used IN
each establishment or household. The machine may De
struccd OF various sizes aud Is already III uso IN te
city Last evening exhibited before the society
10 does 10 be very complicated IL CONSISTS OF
cass ease. with rocking cup Inside, which, when Tilted
to one side, allows the water To aeeumuete III INC
upper portion until its gravity forces IL downward
ana thus secures the discharge Of that measured
quantity OF water To allow the apparatus 10
work without diminishing the pressure OF water
the is partially hlled With compressed air anu 10
prcN the Of air by escape or It's absorption Dy
water small quantity Of water from the lower part OF
the case i discharged at each movement OF the rocking
cup the vessel thus receiving instead an equal volume on
air outside This matter OF air Is seelnlty III the
entire arrangement and needs stated. the better
and further consideration OF the Society, ana WILL at the
next meeting be fully aualyzed Experiments by
Prot Vanderweydc. which had been announced fd last
evening, postponed 20 future time Ihe meeting
adjourned to Thursday evening next.