St. Mary's beacon., 1860-01-05

J 1859.
'WN'IIS IL . case f'T distribution nf the per-
IN ""ai estate "f ThmIa- PAyEe Sr. ,.-cca-.
!. d'urS PIvn- one "f the S,ns nf rail Them
Be PaHnr is "n al'sni heir and ur, If the linz
Il "i ih" State T MIFNlHid. Il is ordered
" 'h" Z un that Jim L. Paynr rxrrm,.r
& SIi,Islgu-sIa ".ii. >, as - ; - II
which a cylinder would afford, if pro
p.lled butt end foremost. because th,
pressure Of the fluid upon every inch o
conical surface would necessarily be con
tinuous.
But the two ends Of this curiously con
.tructed ship, arc parabolic spindles. \
parabola is n figure obtained by cutting
through n con" parallel Ia on3 of its slant
rides. Now il parabo.a be turned round
upon its base or double co-ordin9t", II viii
produce a paraholic spindle. This "pindle
win be blunt or sharp according to thc
character Of the parabola. which is de-
ternined hy the height and scmi-GiaincteI
Of the cone.
1t would appear that the paraho!ic spin
die adopted by the Mcssrs Winans is
generated by very fat Parabola who's
coordinate is very extended; 50 that
through the general shape of the two
ends Of their vessel seem to be- comic: !,
they are pp; ~. In no other way c"uil
the curve which they need, be- generated.
1t is hv absolute experiment that they ar
rived nj 4 knowledge Of this fact. Th,
particular character Of the raral'olic spin
dlc adopted by them is matter within
their own keeping and very properly SO.
Eut why give this form Of curve 10 th'
shape of the two ends of their ship Fol
che bcst reason in the worli, AMI that IS
10 5:Eer curve makes SO little resistance /,
the water in moving through it. The
pressure Of the Guid upon this curve is re.
duccd 10 its minimum, and constantly
t-nGs to zero. The PARTICLES Of water ar,
known t. move freely amongst each other
because they present the smallest con
ccivablc point of resistance to each other
The presence oc these two parabolic spin'
dies IN the water is not appreciated by
che PARTICLES Of water, il one may 50 speak
Hence friction is almost absent. There !.
in ene no huggirg Of the vessel by the
water, as there is in every other curve
except the circle.
When propelled through the water, it,
resistance to these ends is not sensibly in.
creased by the velocity. ncr by the dis
turbance of the water When the mass
Of water displaced reaches the base Of the
spindle, its resistance, however snail,
vanishes ON passing that line. that is. sup
posing the vessel TO be constructed Of two
spindles, applied base TO base. without any
sntcr,nnA;ota cvl;Ddr;eal Lnlv R,t a
there be such body, as there is in this
vessel. then the resistance of the cylinder
70 the water, while passing through it, is
less than in any other curvilinear body,
and is an easily ascertained quantity
These considerations viii explain, in
part. Why it is that this steamer. ON its late
trial trip in the mouth of the bay and out
eide Of the Capes. did not pitch forward
and backward The waves could not lift
the spindle-shaped ends. because the water
could not hug their surfaces long enough
90 affect their motion They continued to
displace their weight IN the water at all
times and at all speeds, whether the water
was smooth or disturbed If the wave
broke over the ends. the form Of the curve
was such as TO disPerse it without the
spiDdl-s. feeling the weigh, Of water. II
Il struck under the ends. or at their side.
o. If cross sea and swell should come
upon them at the same moment. the effect
was the same. There can be no pitching
Of the vessel
Having attained the great dcsideratum
Of avoiding piaching and falling, or thresh-