The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1865-11-26

In ascending the narrowvaley Of the Arc they found
that tho river in describing the curve from which de-
neaux 10 the Piedmonteso valley Of the Dora Ripara,
which almost parallel with II on the other eide OF
the APPS Inc arc running from east sro 70
empcs into the Po Here the distance between the two
sides Is but little than twelve Kilometres or seven
miles and fraction the railways upon both SIDES could
be easily reached from tho points Of entrance, and
the biologists who examined the structure Of the noun
tain TO be pierced decided that the rocks composing
might be divided into two principal classes anthracite and
ooe, and subdivded into groups, Of which mica, tale
limestone and quartz were the distinguishing ingre-
dients
Previous to the final decision the points at which
rands and Gratoni had been engaged in the study Of
seine means OF applying compressed air 10 the propuS
sion Of railway trains their object being to work with
this power the steep and dangerous ncnes OF the rail
way between Turin and Genoa, where II issues from
the long tunnel Of Govi in the Apennncs.
principle Of which found such favor with the
Sandman government that the right granted 20 the
three engineers IN 1854 Of applying to tho propens
tlnod TO achieve q much more important mission.
While the three engineers had been engaged IN their
studies Of compressed air motive power English
man named Bartlett had patented machine for per-
fosting rock, the principle OF which vas combnat
steam ana MI s,sye With WONDERFUL orcs
and velocity against the opposing rock nder Ordinary
circumstances this worked admiraby-that 49, IN short
cuttings and open tunnels IL wns however CONSIDERED
entirely impractcable in proposed tunnel Ike tina, OF
the Alps where the great desidcratum constant
supply OF fresh air Steam can only be generated by
Ere and FIRE Ia the great consumer OF air occurred,
however To NJ sommeler and his friends that " they
could effect combination between thor apparatus or
COMPRISING air and Barlets perorator the result would
be just the kind Of machine necessary Tor piercing the
Alps. Experiments were made and the machine was
found TO work admirably. KAN
OPERATIONS conxZScEp.
Tho work was actually commenced upon the tunnel IN
the early part OF 1885, and followed Wy by ordinary
means, tbs work with hand and bar I'll the 18th of
June, 1861, when but hundred ard twenty four
OF the tunnel had been cut whom tho perorating
mnchins entered the gallery at Badonneche; and was
not tl the 26th Of january, 1so3 when nno hundred
and twenty one metres had been completed, that they
commenced the attack upon the Savoy side-all this
lapse Of time having been occupied IN perfectng the
machines training laborers to work Them and preparing
houses for them in the miserable villages Of Fourneaux
aud Bardonneche r. .
~ vRAScn yoxs The rovKHryr
After the cession Of savoy 10 France the French gov
eminent Of course became deeply interested In tho pro-
gress and Of tho tunnel BY the treaty Of
SION the Hardinian government reserved the right Of
completing the tunnel; but By a convention be,ween
the two governweb In 1882 the pecunary aid Of France
WINS scored Tho total cost OF the tunnel had ben
Yt.nated at sixsyaye millions " francs aud. upQp