The New York herald. [volume] (New York [N.Y.]) 1840-1920, 1878-07-31


Tho general JOY over the repair was, however,
destined TO be OF short DURATION for the next day as
s noppess hat sscoua disaster had arrived This
time tho bos had broken In such way that their re-
pair was absolutely impossible. Tho connecting roo
had stood the strain without bending, but the crcu
lating pump rod had given way and otner damages
had occurred. The engine was again disconnected,
and the Enterprise, though Determined not TO DO
stopped, went slowly ahead propelled only by the high
pressure cylinder.
me trip promised TO extend i,scli indsnnitely
for the rate which the ship was progressing, u
was evident san Antonio could not DO reached
before the waters OF tho Madeira had fallen. Amer
complex device suggested by Assistant Engineer Wal
ter Sheweli United states Navy, the condenser
was changed from q surface 10 lot; vacuum OF
seventeen inches was Obtained, ami the snip was
enabled, crippled ~ she was, 10 steam ahead ~ a
rate oil eight Knots per hour All was well AGAIN ior
expedtiousiy, still as a rate thai woud secure sue
cess during The season.
During mo time that these repairs were being
done short dlstanes had been run. The highian dis
OF Almeiram had been passed snd tbs tswn o. San
tarsm, sausted ~ The condusace Of she dark b.ue
TINS point the survey on without interruption,
at rate OF about Sky miles day.
SURVEY.
The mode Of prosecuting II 10 simple, but thoroughly
effective. AS the object IL only to obtain track cnaft
no effort bong 10 trsng uate The river Tnis
task that would require many years Of labor and
Abe services an accomp corps OF surveying
engineers. rho work to De done by the Enterprise
has been divided among her officers IN soon a way
The points TO be noted are the depth Of CHANNEL the
profile OF the Shore tho position OF the Islands, tho
courses stored, the bearing OF prominent points,
the fixing OF landmarks, the srengn Of the current,
the character OF the banks, tho compass deviauons,
tho baromctrc attitudes, the meteoroosical changes
and the lat tude and tude OF the towns, villages,
bars, shoals and ROCKS OF the river. All this data Is
recorded and furnished the draugbtsman OF tno exFe-
dillon. From II he draws map 10 scale aud prepares
the charts which will afiorward DO engraved by the
department The observations for latitude and longi-
tude are the most important oil all, Tor on them de-
pends the accuracy OF the charts TO be prepared.
NIGHT SIGHTS.
10 this climate the midday 10 too terrible 70
BIO encountered, even wnen the eye Is shaded by col
ored glasses. Consequently The observers OF the ex
petition prefer to take the stars For this purpost
they use circles OF reelection and sextants mounted
on tripous and art1cial horizons OF mercury pro
tected from moisture anu insects by clear glass The
stars best adapted at the present time Tor the deter
minston oil longitude are Anares, Viga, Spica keeu
lbs, Beta Leonis aud Alpha 0pnnchLs hose Ior iati
tude Alpha and Beta, Centauri, Eta oil Ursa MAJOR
Arcturus aud Canum Vcnaucorum L. The iatguin
work OF taking these night sights is done Oy lieute
ant Commander s. II. Baker and by Lieutenant Y.
Perkl ms United states Navy, both skilled in The AZ
LOT star eh.,srving AAa so,h sxpsxw In mathematics