Wilmington journal. [volume] (Wilmington, N.C.) 1844-1895, 1859-05-13
The Distance to which Sound may be propagatel.

The distance at which sounds are audible does not
admit of precise measurement. In general it may be
stated sound will be heard farther the greater its orr
gina intensity and the denser the medium in which #
is propagated 1t also depends greatly upon the deca
cy of hearing of different individuals. The intensity Of
sound like that of all forces acting in lines dminishes
in the inverse ratio of the squares of distance of the
sounding body. Thus, if the linerar dimensions of a
theatre be doubled the volume of the performers voices
at any part of the circumference will be diminished in
fourfOd proportion.
A powerful human voice in the open air. at the ordi
nary temperature is audible at the distance of
hundred eet In frosty air, undisturbed by winds
current sound is heard at much greater distance with
surprising dstnctness Lieutenant Foster in the third
Polar expedition of Captain Parry held q conversation
with the harbor of Port Bowen, distance
of one mile and quarter.
DR.. Young states, on the authority of Derham that
the watchWOrd alls WELL, had been distinctly heard
from old to new Gbralter, distance Of ten miles The
marching of a company of soldiers may be heard on
still night at from five hundred and eighty to eight hun
dred and thirty PAGES squadron of cavalry at foot
pace, at hundred and fifty PAGES trottng gal
Looping, one thousand and eighty PAGES distant. When
the air is calm and dry, the report of musket is audi
BILE at one thousand PAGES The sound of the cannon
aiding at Waterloo was heard at Dover.
Sounds travel further and more loudly the earths
surface than through the atmosphere. Thus it is said
that at the siege of Antwerp in 1882, the cannonadng
heard in the mines OF SaXony which are about three
hundred and twenty miles distant; the cannonading
at the battle of jena heard eeby in the open fields
of jena, but in the classmates of the Notifications 1t
heard with great dstinctness. The noise of the
sea fight between the English and Dutch in 1872,
heared at Shrewsbury, distance of two hundred
miles. The greatest known distance to which sound
has been carried by the atmosphere three hundred and
fOrtyve miles it is asserted that the very violent
explosions of the volcano at ST. Vincents had been
heard at Demarara.-Physics and Natural PhiLo0Phg
by Professor &tllman Jr.
EMIGRATION FROM LIVERPOOL TO THE UNITED STATES
The Liverpool Times, in an article on emigration,
says:
Emigration to the States has not for long period
been active at present, and several vessels have
cleared in rapid succession, with numbers ranging from
600 to 700 on board and it is believed that the next
few months emigration to the United States Will pc
the largest experienced for several years In the month
Of January ships sailed from the Mersey convey
ing 81 cabin and 1858 Storage passenger-the latter
consisting of 326 English "a Scotch 554 Irish, and 80
foreign emgrants in Feb ten ships with 10 cabin ana
I7l7 storage passengers-489 English, AZ scotch lOJo
lrsh and SO other emf grants and III March, lhlrteeh
ships, with III cabin and 463 Storage passengers
$50 English, 100 Scotch, 1898 Irish and loO other en-
igrans. OF the returns for January, however, must DC
deducted 333 passengers who returned to port IN inc
Isaac Webb and reshipped in the vessels sailing IN the
succeeding month In the corresponding period OF $780,
% vessels, carrying 234 cabin and 500 steera9e pas
sengcrs, sailed for the United States In short ships
during the last quarter 1896 passengers took their de-
parture for the western continent The emigration 10
the Canadian provinces has not yet opened but one
ship has sailed for New Brunswick with IA cabin pas
sengers
The emigration to Australia India and the other
British possessions has greatly fallen of.
SUCCESS" Success is great institution" said
friend to us day. We like the saying. 1t is worthy
to be placed amongst the proverbs of the land.
4es success is great Institution" 1t always colr
mands respect 1t does this in spite of suspicion
that it has been the result of good luck than u
good management Around the man Of successful eli