The daily dispatch. [volume] (Richmond [Va.]) 1850-1884, 1873-08-04

80, rps Eyee Use
w IaS 4 letter 70 the Du Graphic IN which
3 f:Whtiesout Of the ,44s aerial voyages. ]
have made Ala carried me eastward several
ots the missing ones 90 far to suse9tn The
ground taken by the writer wherein he
speaks OF the heated belts OF the eafth.a That.
however, does not disproyes the eastward
motfon oftbe earths atmosphere as natural
and constant condition. Exceptions to a
aY. when properly considered, count most
to- eonfirmit. The marked exceptions to nv
eastward movements happened in August,
September, and October, but. more partictr-
larry in the two former months. From the
latter part of July until the beginning of
October the heated belt of the earth moves
north ofthe tropic of Cancer, and that brings
into the latitude Of forty all the phenomena
OF calm bell, horse latitudes,' and IDOL
drums AS soon as the decfination of the
SUP gets southwark, on to the beginning and
middle Of October, this heated belt cooIs off.
and the brave west winds come moving
down upon Us even to the surface of the
earth. In the autumnal calms the balloon. if
riotoyer 1000 or 5000 feet above the Ieyefof
the seasls not likely to go eastward with any
rnarkd4 Degree of speed unless it be irnme-
diately before or after storm. In the au-
tumnal equinoctial gales they go north, east,
and sometimes northwest, when sailing, at
low attitudes.
All these nicer points are yet to be set
tied by experimentation. II the prime OBJ
jecLof the transmarine balloon voyage was
to get clean across the Atlantic on the en-
perimentum c1ucis, it would not be the most
advisable TO- start in August or September.
In these months it may require an altitu de
Of three to four miles to reach the eastward
current, as my August ascension from LA.
E,fayettc, Ind, in 1859, 80 significantly proved.
Should 1t be desired to cross the Atlantic
in September, we have only to start on the
front wave of a cyclone, and that would
push us across in less than sixty hours. The
Weather Signal-Service Bureau at Washing
ton can give US the hint of an approaching
cyclone from twenty-four TO thirty.six hours
before it reaches the latitude and longitude
Of New York, and we have then only to ill
our balloon with gas and let it 60. Henry,
EpSy, Redfield, and others have tracked
these cyclones so clearly, and the Signal
Bureau has predicted them so often and
truthfully, as to leave but shadow of doubt
of their moving habitudes. This has refer.
ence to those greater cyclones that spread
over an area Of a thousand miles or more in
diameter, and which do not exhaust them.
selves in less. than some thousands of miles
Of eastward travel when they get up to The
belt Of the temperate zone.
While the complete crossing Of the sea by
balloon isvery desirable in giving kclat tC
the project, it seems to. me that it is not the
most important feature of the scheme. The
grand principle involved is, Does the all
roll round the earth from west to east at the
average rate of forty-tive to fifty miles ar
hour faster than the velocity of the earth
Without going into theories on the subject
although the positively known factors o.
heat, cold, rotation, and centrifugal force ex
tort this eastward motion of the mobile at
mosphere by mathematical reduction as al
equivalent thirty years experience il
this air-tide attests the fact Of the case, ant
the water-tide upon the open southern oceal
Joins in the testimony"