New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1880-11-17

| potential in the aforementioned machine. These
showed that each pair Of coils on the armatuIe Oh
| The machine developed nuctuatIng eleotro-motlye
| force the projection OF which gave klnd OF oval
| cnrve around the centre OF the diagram
When these curves for each pair OF COILS are com
! bned it is found, Professor Morton saiu'
| that they show KIND Of eight iobed hgure
| with Intersecting lines IN certain Places
| I heso intersections, If compared win the posi-
| lions of tho comnutator, are found 70 com
eide exactly with the points atiW hch rupture OF CIT
emit occurs and thus show that each PAIR or cons -
thrown out not az the point where is iOrce ieaS.
but at that at which its electro-mQtlye noroo Is
eqnal TO that from which IL breaks thus suppfesS-
ing a spark but only at certain sacrlilce oi theo-
Tetoal efficiency. ,.
Professor Morton alsoread paper on the measure
mcnt OF new forms Of electric lamps operating oy
incande>cence. Alter explaining his method OF
measurement. no gave the results OF numDer OF
experiments Inch ho had recently maze WI INC
new Maxim lamp. In this lamp hament OF any
carhOHlZIblc substance, such as paper OF Caru, -
placcn IN a Globe. The globe rs exhausted OF AR 10
2 certain po'nt and filed with The yapOr OF gng-
hne The electric current IL then passed through
the globe. By singular law, th3 dtc0WpOseu S1So-
line becomes deposited upon the haineht az the
point where 1t Is weakest and is cirDorlzed tnere.
This carbon finally becomes OF the same conductlNly
with The rest OF the lamcnt, when tue acton OF me
intense heat seeks the next weakest point or tire
tlanent, and thus process Is repeated mdeln'tely
This property of self-correctiOu, Professor MORTON
SAID, of great npOi lance. The capacity OF the
lamp for developing light Is remarkable ono OF
these lamps, employing auOWcr ul 40 cdndlcs, Nas
run 30 $40 candles per horsepower; another OF ~
candles, IN reference to power, was run 10 300
candles per horsepower: another OF IL candies was
run to 1856 caudes Der h0rsr-poWer Inns 'att
lamp, with the power increased to 70 candles WAS
run 10 42B candles per horsepower, ana WIN tho
power Of % candles WIS run 10 COZ candies
per horsepower. This WAS 1Ir WItmu Wult
the lamp would stand. 10 could be
run to go candie-pOWcr and II sand. u has bcen
run to ] 800 candles p'r horsepower. ne law mas
been discovered of the increase Of efficiency win
the increase OF the intensity of action IL hs. also
been found thai the resistance decreased with inc
increase OF temperature.
Professor Gibbs expressed much astOnlshment at
the results obtained Dv Professor Morton, and SAID
that nobody had dreamed that tho licht OF incli-
descencc Gould compete with the lighU oi the arc
Professor Morton explained that his references 10
horse powerhad been 20 the power N The electric ru-
rent measured 10 the usual way ald NOT b the power
in the machine. He added that he would great y
like to compare the Maxim lamp with Edlsons
latest lamps pro yided with hlameuts of bamboo
cane. BY accident to his apparatus Mr.. Edison
had not been able to redeem promise % senu FRO
fessor Morton one Of his lamps, Dut Mr. Edison had
written him to the effect that his latest amps WIN
1G candle power had been rim 10 80 candles per
horse power, As against 10 candles per morse power
IN bis horseshoe carbon lamp. inns IrSuI! COM
pared with tho result obtained with the MaSlln
lampas 80 TO 210
Professor Barker said that he YVES much inter
rested IN the Edison and the incandesccnt lamps,
and that the statements made by Professor Morton
certainly marked year OF great progress ~ electric
lighting. One or the greatest dIitcuIte5 bad been
III making fibre that would not dlsIniegrate.
bamboo nbre at fifty candle power lasted ahout IN
hour. The lamp Of Mr. Maxim was great step IN
advance il practically caused the nbre 10 last indei-
Initely. lie understood thai MT Edison had re-
Gently been working III the same direction.
Professor T.. ID. Cope followed Professor Morton
with two papers on AimravIdae and M0cene Cant
dae. lie described certain types OF feiIdae now ex-
tinct and ascribed their destruction to lack of food
supply. Their functions were the same as
those of the present felidae. Like
these only IL greater degree tney destroyed
U larger portion of life than they were able To
consume.
The Council If the Academy will meet at 1880
o'clock this morning. The regular session VIII he
held III the same room. and will begin 1t II H.