New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1860-06-25
THE GREAT ECLIPSE OFJULY IS.

To N. Editc- of TasE Y. 7y,bsn.
SIR: suppose many Of your readers viii be equally
interested with myself in the following particulars
res Getting the coming eclipse.
The center of the ecIipse-hat is the center Of the
moon shadow-will first touch the earths dix in the
Pacific Ocean in lat. As 81 ~, Ion. 1867 W. OF
Greenwich on the morning Of July lS This point is
about 20 miles southwest of the entrance of Columbia
River and here the will rice centrally eclipsed at
"a minutes past O'Clock, or 81 minutes past mean
noon at Greenwich. As the shadow comes up owe
the PERCEPTIONS side of the EARTH in three minutes from
the moment Of s entrance, it makes stride Of more
than $50 miles passing directly over Astoria and with
q gentle easterly curve DOrth-eastery through Wash
ipgtOn Territory, across the Rocky Mountains, 10
the parallel Of so north latitude, which it crosses IN
lor. l12o As W. In eleven minutes more II reaches
point the southwestt IN shore OF lludsons Bay
in lat. So as. With lessenng speed, in ~ minutes
more will have crossed Hudsons Bay and the main
land of northern Labrador, and arrive near Cape
Cbidley, its northern terminus, lat So SO. Thence
slightly north Of east it sweeps of into the northern
ocean with a velocity of - miles per minute and
almost touches the Goth parallel of latitude. Them
gently curvipg southwardly in 23l minutes, II
arrives at a point 90 miles souihery of Cape Farewell
in lat. Al 30 W., and with an increasing southery
curve in AZ minnes recrosses the 5Oh parallel OF
latitude in lon. 10 W, at ! clock 81 minutes p. m,
local tine at that spot Thence passing souttea5tery
into the Bay of Biscav in % minutes more it strikes
the northern of Spain, in Ion. D W., al hours
80 minutes D. M. local time. Ii will he II minutes III
crossing the Peninsula leaving its southern shore IN
lat. 39J 40. Crossing the Mediterranean Sea IN 10
minutes il will reach the African shore in Ion. a h.
Thence raising southe asterly, in 3S minutes more It
leaves the earih the western shore OF the Red
Sea- in lat. Is 40 NJ Ion. 80 45 T., at which point
the sun will ret centrally eclpsed, at hours 81 min
utes p. M, local time. The central eclipse, allowing
for the effect of reiracou, will the earth disk in
hOurs and minutes.
The moons shadow could it fall perpendic 1larly
the surface Of the earth would form circle of 20 miles
in disueter: but passes the northern verge
of the earth it will form elpse variousy elongated
and distorted, according to che Inclination OF the sur
face and the direction of the central path. When the
Western edge Of the shadow touches Astoria, It's east
ern edge will reach poiut $50 Mills eastwardy on the
central track nearly to the Greet of the Rocky Noun
ialIls. The transverse dsmeter will then he about
l40 miles Where II passs the Delghb0rhoOd OF Eng
land into the Bay of Bscay, and through Spain, the
shadow i'll form an ellpse 70 miles wide on the cen
trail ath but elongated 20 10 30 miles on each side,
nearly al right angles. At all points within the shadow
the sun will be totally ecllpSrd.
Ona map of North America, eleven lines drawn
pa,a, TO- and South Of the Central track at intervals
of 200 miles will indicate nearly he points where the
sup viii be H. TO- y, &C., digts ecliDsed. Similar
spaces on the Atlantic Ocean and in Western Europe
Will indicate nearly similar phases. The uuecfpsed
dgits represent the central width of the suns luminous
crescent twelfhs OF his diameter at the moment OF
greatest observation.
AS the central track croes.s the great thor 1ugbre Of
European and American commerce. an int resting OPP
porunirv will be furnished 10 those who may he max
ing the passage, and may happen TO he within the Linz
IT. of he moons shadow, for observing phenomena
which many will have made long and expensive Jour-
peys 10 witness
Tie distances mentioned above are in Statute miles,
=, 4TtloSg Minnesota MOSES sFR cseEB,