The Bolivar bulletin. [volume] (Bolivar, Hardeman County, Tenn.) 1865-1888, 1872-01-19
TaE GRRAT BRLVGE.

!, Not the least curious Of Shs speeula
: tions which have lately been PROFOUND
ed seEoss the water Is one called ''Cyc
ID Delage; an Duplication of tn
H. : Ge01ogieal Phenomens Of tn
Chiel The theeEy is based upol
Globe >SisRs Of Il. Adhemsr,
the caIcuI.- ~sae5ieian, to Vhsm tn
French Math. tks really novel an,
first suggestion o. = has developed /
striking idea that b. = Ws shall no
due. With the figure Ns4 Ee guar
trouble our readers, nor 81 <ss one
antee that the theory is = - SeS
but, making plain story, in p1- 81
difficult one. the line of exphcaC-
is as follows 80.
The earth, as it spins upon its axis,
also swings or ''wabbles" upon that
axis precisely as top rolls while ITS
toe remains upon the same spot of
ground. The top completes this cir
Gle in a second or two; but the terres-
tial motion, caused by the SUMS at-
traction upon the equatorial pro5ube--
rance of our planet. has q oycle of
about twenty-one thousand years. Du-
ring one half OF this period. which is
that known as the precessicR OF the
equinoxes, the North Pole viii be more
exposed to the sun than the South
Pole; during the other half, the South
Pole viii be more exposed than the
North. At pFesens corresponding sea-
sons are not of equal length ia the
northern and the southern hemisph
The seasons of autumn and winter, in
the southern hemisphere, are seven
days longer than those Of spring and
summer. North of the equator the
reverse is the case. We enjoy seven
days more of sunlight during the year
than falls upon the austral countries;
but, in course Of time, this advantage
will return 80 the southern hemisphere,
and we of the north shall be, for ten
thousand five hundred years, or half of
the period of eduinoctial procession,
left comparatively in the cold. In the
year B. O., 1,24S the North Pole at
tanned it's maximum summer duration
of heat. But for the last three thous-
and years the heat has been decreasing
and the maximum winter duration of
cold viii be attained about the year
1882 of our era.
Thus much is an undeniable fact :;
but upon the fact M. Adhemar bases
some startling conclusions. First, as
| TO the cause and dste of the great del
uge which science and tradition agree
| q
part of the earth not many thousand
years ago. At the time Of its occur
renee the North Pole had been in com
parative darkness for ten thousand five
| hundred years. During this immense
period the excess of the hours of night
over the hours of day had amounted 10
hundreds of years, This excessive
cold had sufhced, little by little, TO
| build up an immense cap or cupola of
| ice over and around the North Pole,
| which extended, if NJ. Ademar's calcu-
Iations are correct, as far southwark as
the seyentieth degree OF north latitude.
| The attraction Of this grand glacier
had drawn into the northern hsmis-
phere the larger part Of the seAs and
| oceans Of the earth-ths northern con-
tinents wers for the most part Gnds1
| water, and the marine shells which we
now find upon the sides OF mountains
in the northern regions were then de
| posted for the puzzling Of SeolOgists,
The southern SUBMITS, on che contra
~, were high and dry, and that hsEnis
phere was then mainly serF sstiaI. as i
is now mainly aqueous. An entirely
different distribution Of bGnd and SCI
from tho present one then sxistsC
throughout the globe. Btu ths yearly
sum Of night hours In the poriheEl
hemlsp here at lasb began 30 lessen, IA
sum Of day hours % IN crosse. Tn,
great cap Of northern ice began 70 d
nalnisft, and 3 southern polar glacier b
form. After many centu Fiea She san
heat had sufciently softsned Ga
NoFtfI Polar ice to cause its sudde
PFesIk-aP. The slow Pr9 cess sf tsErss