The daily union. [volume] (Washington [D.C.]) 1845-1857, 1853-08-05
Annual Meeting Of the American Association
for the advancement OF science.
Correspondence of the N. Y. Time.I

n Correspondence OF the N. Y. Timesl -t @
4 CLEVELAND, Ohio. Friday. July 30, 1883
Il Inc list OF papers read today numbered twenty one
4 rather agood days work accomplished OF ,hs number
lew were OF general interest, mainly divested of Tepsl-
ant teehnicalies, and likely to be productive OF hints
useiui 10 more han one reader of newspapers Synopscs
oi The more important papers given below and have
one or two more on hand for the next mail v tr IN
In the section OF mathematics and physics Prof Alex-
ander ID. Bache read paper the tides at Key West
The following is an abstract .. EHtp
g MApr sEp TEsT " wf
| II. 5. COAST SURVEY 1F7 'T'
i By PROF A ID. BACHE
The results are from years hourly observations of
the tides al Fort Taylor Key West The tides sbb and
flow twice in twenty -four hours but the diurn,l ineoua-
iy in height is relatively large, amounting in to
So feet, and reaching ia extreme cases s3 feet The
edge oil the laws OF the durnal eeuari,y, by which
cessive high or low walters may differ isvery important
The corrected establishment for Key West ls hours 90
tides by the daily curves There being two tides in lie
day. the observations admit Of discussion by the or
dnaIy methods, as those adopted by me for the tides OF
the Gull OF Mexico. A comparison OF the results has
thus been instituted. The halfmonAiy inequSiity II
shown in table l. and the accompanying diagram. The
law Of interval and heights is compared with lbeory and
The differences are very small The transit to which
the tide should he referred the second before the high
water The constants are deduced from The formula
The diarnoi inequality is also obtained by the usual
method That or hign water greater than that OF low
ia The proportion Of 1910 81 A comparison Of the di
y. H
The discussion continued by decomposing the
Of observation into two-a semi-diurnal and diurnal
carve. treating the interval between their maximum
dinaies variable, The mode OF adjusting the COM
pound curve, so to give the best result in COMBATING IL
with the curve Of observation, is shown The SET Of
compared the diagram before referred to-
The hcy-moaty inequality Of times and heights, found
in this way, agree remark ably with the formula. and
correction being applied for the difference between the
solar and lunar day, agree perfectly with The previous
results, They compared IN curves the Diagrams.
The durna inequality in height, deducsd from the maxi
shown by table and diagram, which their
compared The explanation is given OF the different
laws followed by The inequalities OF high and low wa
ter The diagrams show different of intererencs
waves, in which The maximum ordinates and the dis
lance between the high waters are made TO vary The
OF the squares Of the ference between theory and
the computed result after correcting for paraax Of tho
moon, less than huHdedh OF foot for The whole
year. The discussion of the value of the interval be-
! remarkable change in the mean level OF the water
Key West progressive throughout the year, was no.
,des in onehaIi OF the year. is higher than the high
water of spring tide in the other half. This s probably
due the winds there tending raise the tide in The har
bor prevailing during one halt Of the year. and those
tending depress ii the other This hypothesis has not
been fully examined but results are present.
curious that combining The results for the mean level in
opposite parts OF the year. there come out the curious
tides pointed by Professor Airy and not hitherto fully
Tor It's period and the other, half decnaon period Of
the moon diagram is given TO show tha, tne results,
when grouped by the and moons decllnatiOn, con-
form TO the law Of change, They do not suffice cfi
teron OF the wave theory. or equilibrium theory, the re-
suits iot me moon requiring the constant to be zero and
those for the sun TO be one third or even greater
The following is abstract OF paper The Zodacal
Ligh, by Mr. Daniel Vaughan: aH
THE ZoDlACAL LIGHT,
The PEI iodeal appearance Of Metsors, and Ae Positon
ot the Point IA Space 10 uhch me Motion OF ths Solar
Systm IS dueeted ..r
DAsIrL VAUGHAN, OF CINCINNATI
During the last year, endeavored trace the origin
OF the Zodacal Llght TO the effect which resisting
dunn IN the celestial spaces combined with the motion
oil translation OF The sun, should produce the orbits
OF those small bodies which WRIT globe shooting.
stars Ths extraerreslral origin OF these bodies,
well as the movement o our system through space 10
now generally admi,,ed aud even the existence OF
rare medium IN space, though soneliaes regarded as
Hypothetical, IS (accofdlng TO HumbodD "proved by
the exact accordance OF numerical relations In my
cent Investigations on this subject, have taken into
the effects OF planetary atractou on sach
bodies small or light enough 10 be conrpllsd BY
the medium and tbis which at first neglected,
modes the theory considerably and enables il to meet
several iacls' Tor winch could previously give no eS-
PLANTATION .-
Were the son a,re.i with respect 10 the medium, both
having The sane moon, Ia suppositon which will
aim) the Orbit OF his attendant should continually di-
mnIsh without undergoing much alteration in FORM
But he moves rapidly through this fluid, the small
bodies which attend him wrll sustain greater dtmnu
ton OF velocity from its resistance side o the line
OF his moon Than they sustain IN describing the opposite
portion Of their orbit A continual increase OF
equal resistance but the will be arrested the
bodies approach the account of the greater
density OF the meium in his vicinity. 1t "a evident,
however, that the great variation in density, winch
shoad expect to find IN the part OF this aid which forms
atmosphere Tor the sun, must in great dis.
appear table distances from hum consequences
o bis great velocity: and though bIs prevents
the relative motion OF the med um from being ec,near,
the detection nearly the every side and will
therefore prevent the eongaon OF the mseorc orbits
Were the medium at rest it would be natural to expect
that the perheon of all these orbits should he stasted
between the sun and the pom, to which he is movng
This opinion have confirmed by mahema invssir
gauons which show that the motion OF their raosvena
axes ncpay depend the occurrence of time. the
uar distance between the penheon and the point IN
question. In the of the light bodies under coDs0e-
ration. the equations will become great that the planes
IN which they all pass close TO the same line
and all inerseet the narrow space IN which ths
ptrlhelion OF their orbits situated 10 the immenso
swarns OF eos, which assemble here IRON all paris
of the planetary regions ascrbe the Lodaca Light but
this conclusion must be modDed IN consequence oil the
effects arsing from the attraction OF the planets asf4
In ,he ahssnes of a resisting medium, the planetary
ss,urbanee should be periodical bu, they must produce
.suIts OF different character these bodies. ch
obieced 10 the condition Of keeping the axes
of their orbits in the direction OF the suns notion TIE
force which the planets on the bod
les al avs its greatest value the pona OF
their orbits and the planes OF all should change thar
position from it's influence until they inlerseced the
ecfptio in line perpendicular that which The sun de-
seribes This would be strictly the If the planets
were all situated in the ecliphc and since the largest
and most distant planets very this place, and
the small bodies susceptible 10 the ehects OF
disturbing forces when from The sun. The actual
T.. 49,