New-York tribune., 1874-12-02
Tho hog. Prof. Cope Of uaydens United States Sur

yey discovered during tho past season IN Colorado
The skull was longer than that Of the Indian khi-
nOcerOs aud the tuberOs Of the lower Jaw were
greatly developed. Tho front pair formed diver
gent branches the lower front OF the chin 30
that ID appeared to bear horn on each slde when
the animal doubtless found useful in roofing 10 tue
earth The species was sef-s1na'lc III i.s ha9i;s i
like the HippOpOtamus and DInOtheriumj but WINE
these are furnished with extraordinary develop
ments Of the lower Incsor teeth for tearing up the
food the EloLcigm rdaosna is the only anlnaI
known which possessed horns in the same POSITION
and for the same purpose stlii older Vpe ~ ~
hogs-whch may claim to be the predecessor ia
structure as well in time OF all kD0Wn 9neia-ls
the dckGnodOn Cope. from the Eocene OF wyoming
Tho A. wsolcaoe WIS power lul beast larger t'an
bear, with comparatively short head anu WIN . III
uninterrupted series OF teeth winch belongs % 70 az
the oldest forms of the mammals aud TO the nigner
quadrumana.
Aee.vrvc wrr1r TIE SPrCTROsCoPE-Some inter
eating experiments have recently been made In tDe
Assav Department of the United States Mint AZ
Philadelphia by Mr.. Alex. Il. OGtcrbrdgo 10 ascer-
tain tho practicabity of assaying metsis useu ~
coinage by means of the spectroscope. Inc earhes'
experiments in this direction wero made py nii' W.
c. Roberta of the London Mint In 49, IN connection
with Mr.. Lookver, the distinguished Spec'iosooIo
but with unsatisfactory results. MIR. Outerpfideoe
expcriments as detailed IN paper Ieau oe'o
Franklin Institute Oct q, 1874, seem 10 cstap'n 'n0
appateut paradox .bat the spectroscnpc heIn"u 20
in one respect far too sensitive ana minute a"u' "
another respect far from being minute enough ~
serve the uses OF assay. The problem 70 De so'V'u
is simply stated, to utilize the specuoscopo 80
means of quantitative, as wel a' q''
analvsis Tho experiments in question are inans
;th the object of ascertaiung the practical value
of the discovery of Mr. LUckyer, upon winch thus
observer founded theory Of possible QuantitstVe
| o,alvyis. namely, that when powerful induction
| ool ia emDl ycd and the distance between the
metallic electrodes is gradually increased, certain
Of the lines in the spectrum break In tue middle, ahd
that upon further increasing the distance between
the electrodes. the hIatuses in the spectrum lines
| increase pToDortIoaally until tue Lines themselves
| finally disappear without entenng into the details
of the experiments OF Nh Outerbridge 1t WILL su1ice
10 state the rests which lc announces cohe1fIll"s
! The vaIue Of Mr. Lockycr's proposed method on
| working scale He found that the visible olIsT- olIsT
enccs ia the spectra OF Two alloys OF c2nsIoeIap
| difference in constitution were but shgusiy dpplo
| cIabie and that when the CONSTITUTION vi .no i ~
| allows whose spcctTa were composed WAS ihote hs<Iy
identca, the spectral differences were qi,e M ,hap 50
| preciablc. variation for example Oh l.iV" ~ ~
| uured an effort Oi iIlo imagination 10 uetceV '"I
difference. Again tp quantity ~ Acth app ;t n.I
In tlte nroc.ss the author Cdiais Is TOO lnnmtcsihn
~ iva safe rcsult for large melt. since this would
lie affected by the least want OF h0nngenelty OF Iu
ALLOW He found tor example, that the loss OF Ietai
for each spark was not more tnah " - th
Another difficulty detected by tho authoE y ~ 'o ~
i.ct that he the spectrOscOpc Is very s!neiIc ~
pure metals, nplratiyely large quantlty oi gol'
may he present in alloy and the spectroscope nov
Indicate It's presence. lie states that III an aoy ot
gold and copper containing from 30 to ~ paIts ol
so!d. the cold spectrum ls barely visible, and the
| same want of senstIycues5 holds GOOD with othet
| metallic alloys. Ills conclusions are ahhouuceu III
| the following words: . ,
IL IS no; m -sbe tuat future discovery may succeed
in explaining this anomaly, IN hurmonzing apparent il
consstcLccs, Ia eliminating tic sources OF error dH. ~.
in The ac Of spactrO,cOpic science. so far AS
| nave bceA able 10 perceive, nave arrived at tH,
e..,rl ana, rs IS I1vrdctitaJe for the purpose ot
| nliat OperatlCns.