New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1878-04-20

actually used 10 transmit speech This rst &C
pIsyed by him in June 1875 at the Centennial Exhib
lion. 1t gave more astonishment, Dr. Barker saiu 70
a anything a 5eeTe remark to sir William
Thomson about that time, which prevented lne atsI
from sleeping for three weeks Dr. Barker humorousy
described the telephone performance that took place IN
the main building hot morning In the Cehtennal
THE TRIBUNE. The Emperor Dom Pedro and SIR
william Thomson took part IN these experiments
and tine voices Of each OF the party were TeeoS-
nized by their pecuartes Of speech and accent.
Since then the instrument has been deyei3ped
several forms. Professor Dobear IL sald 10 nave
first substituted the permanent magnet Tor tne eieco
magnet in the telephone The form ana nv
diagrams and by means of the telephones tneeeTGs
vances but its sounds are confused win otner SouS m
wires in general The Phelps duplex ttiepnohe ul-
ICES both poles Of the magnet and gets rl OF he Teso
chamber so that It's sounds are puIer me Sry
bipOlar telephone divides the sound received by DC
tween the two poles OF the magnet
Mr.. Edison had discovered that certain khus
in condnctvity upon being subjected TO different
pressurcs He conceived the idea OF utilizing this prop
S to orngnr o that g the differences Of
slOuld corresponding changes IN The electrical
Is placed between two pieces Of platinum. The under
piece of metal attached to the telegraph wire; the
upper piece very thin AMI is to receive the pressure Oh
Die sound waves That Is communicated Through some
intermediate subsanCcsl from the centre OF RECEIVING
Talking the disk II to vbrate and thus TO pro
ducc differences of pressure on the carbon button.
NY ANo-O'h D,V'''' &c -
Of its wiscs attached 10 the upper, ana t h
other 10 the lower piece OF pla,i"rmi, 1.-The ,he
the carbon button between the platinum plates. The
transmission is less or more impeded according 10 te
pressure which the sound exert upon the carbon
button, aud the telegraph wire communicates these
changes of electrical status to distance for repetition
III receiving instrument. The OF battery instead
of magnet gives certain sharpness TO the sounds sent
10y ths nstrun mt so that they overcome other sounds
and give II a distinct utterance.
Dr. Barker said that the whole credit of this most in
genlOus invention should be given TO Mr. Edison, The
DhOUOgTgph then Described, ana Dr. Barker, dtCr
closing with glowing tribute TO the inventive talents OF
vccpresident, Professor Marsh, joined III the welcome
In brief, well chosen words.
MIR Edison appeared somewhat overwhelmed by the
attentions and asked DIR. Barker TO express his thanks
This neatly DONE including II suggestion that MI
Edson's work would now speak for itself The phOuo
graph was thereupon exhibited, and performed excel
ently To the intense amusement OF the audience return
ing words, songs, laughter whstling, Growing, and
other sounds win great clearness. Telephone c0mmu
nicaton was then made with Philadelphia ana an OF
the audience that desired had opportunity for trying
the various telephones
OXYGEN IN THE Sun.
When the Academy resumed its proceedings Professor
Henry Draper, OF NewYOrk, gave report OF progress
his experiments proving the presence Of oxygen in the
Before Professor Draper made the discovery OF
the solar oxygen it supposed that the solar spec
trum contained only black lines b. found a series of
bright lines. which he has since identified as those of
that gas. Photographs Of the oxygen spectrum, with
the solar spectrum alongside showing the bright lines
exhibited To the twenty lines which he had pre-
viousy identified he has since added ten making the
thirty best known lines of the gas.
Professor Draper gave lively account OF the dini-
cues Of his experiments and the ingenious means by
which he had made them successful. Ole of the
curious OF these cOmtrYances is spark compressor
by which he controls and mtenscs the light of the u-
candescent substance whose spectrum he requires for
comparison. lie has sought for other metaOids in the
thinks there is little doubt Of the presence OF
bon, but is doubtful get about sulphur His most
careful experiments indicate that oxygen - not present
in the crOmOsphe of the SUM- the never found
aHa fhg lave nj fh, ~
commented the great value OF these researches An
essay delivered by Professor c. H. +. Peters the
solar parglax discussing from historical and other data
the evidence 70 when estimates of the distance OF the
should be considered the more Trustworthy.