New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1867-11-20
ELEcrRIcrrY-LEcruRE BY pRoF. DoREAus.

Observation-Disclosures BY PROF D0REMUS.
The lecture and experiments with electricity
by Prot Doremu the College Of the City OF Nev-NorS
on Monday evening, were worthy Of a more extended
description than onr space permitted yesterday. the
most important experiments were t1ose WHOM Anstta-
ted Halls Electric Railway swi;ch and DrdWDiiaso
Signals designed 10 prevent tAe oesrtVe -. 80 'si
by the displacement oil switches OF Ihe ot51s % uS
bridges The invention consists IN placing copper Nito
Insulated and charged with electricity IA sue position
that vhcn switch Is lnlspAeeG OF o.
an electric connection = established Win the NlIS ny
means OF which hell is violently ring ana - ia[hsho
displayed. BY TINS means aeciuents Ioi eI'l. % -
should be rendered impossible. The engineer OF an az
preaching train can be warned when hatmie dstant
b. glaring light thrown upon MS pain anu ne
blind as to disregard tits, ON nearer approach e Wa
ana the bell ring until the danger is removed; Then mo
warning instantly ceases model OF MS vs.
produced with perfect success The hundreds OF ra-
road accidents which annually occur by TIE eatesuos
M brid 70 and switchtenders would lot DC possible were
this nv entiOn generally used IL the railway upiAts
themselves will not enter upon ms work OF leiol S1
prof DOremus tho people should Insist that tle IGys
tire force them to- The would not be ieit and mo
trouble would be not wor'a mentioning srong D.ssS.
ies NAV be used which be kept open from Two Weehs
To a month surely ard eitectual!y without lenhS -
al them requires no particular skii ah NJ ptn ta
lecturer briefly sketciied the progress 81 ~ IT,
coyery This he sad has been 20 IA i'' aai ,
thar il seemed that we were now being pernuen
G The Almighty 10 look MY steries which heretofore
nave beer as wall III darkness INTO which human eyes
peered not Electricity Is universal; every substance ia
nature solid liquid, gaseous, beroys us presence
when subjected to tests sufficiently powerful There can
he no chemical action without eiectrcd phehohehOi'
The electrical properties OF matter hIe nv'S
not IL all positive, we should hass no COOl over
this subtle fluid BY the proper use Of bolh kis oi no
combustion different metals snch a. IRON COPPER znc.
&c lv electricity shown with enlincii success to
hriincy of some OF the lits produced being snrprs-
inc Tie different effects OF the combustion 81 theso
metals was noticeable Iron burned VeIy Dlluahty ahu
IapIdy; copper with lees briancy ana speed put veg
steadily and brightly zinc consumed sa HeIy Ip eG Th h
Philosophers wool" one OF the means o. Jansis o o
mower of galyanic battery - 10y the amount Oh he1'
which it excite upon copper WIRE Tue ilOst START
ling effect OF the evenings experiments was obtained by
bringing together two carbonal terminals OF a
duced, attended with such brightness tlat hgt
not larger than copper penny J mp the room ~e-ir
nom the gas-aIGes. This kind ~ light Is the most D-
linnt that been produced La comparison Win
served here tha IL Is not the part OF explorers into tho
regions Of science to apply the discoveries "nch tns!
make That Is the duty OF pracicl ~ ep s 'tS d M
menf rs they have done IN regard 10 le apncdOh ot
this electrical light &c would be lar bettef iot use III our
lipt houses than the comparatively Ie he one employed.
A. nm eydercr OF how slow arc In using the dlscov-
cries the Professor spoke OF one OF te causes Oh INC hVt
rous ploson iasco IN mont 81 petersburg adIS
the war The army kept waiting for The effects OF
sloW-match, up IN llne OF battle, Tor hours Wien.
had the plan OF the scientific soldier who picleeted mo
snny exploded 10y electric spark The influence or
eectrciy the magnetic needle IN acecuus IL Ohl
influence b the basis ~ the needle telegraph some sn-
stances when under thc influence ol lnagncts, place
themselves in It's direction others arrahgs themselves
AGAINST H. The first class OF bodies Is called parlinag
,tlc. the second dianagctic. An electric thermometer
has been devised such delicate sensbiity that t
detect and the heat Of noonDans Uhtl this was
devised II was not believed TINT the moon sent ~ any
warmth with her rays. At the close OF the lecture AMI
accompanying experiments, the large aud intelligent
ence gIptifed by being admitted 20 nc irOleS.ors
laboratory and Ooiug given sshI VI ms vaiOus cleo
trial Instruments