The Middlebury register. [volume] (Middlebury, Vt.) 1850-1882, 1873-06-24

Answer "More Light Wanted "

Answer TO "NIore Light Wanted -
notice that some OF the readers of the
Farmer still ask "more light" upon the
subject Of butter making, and here let me
commend the good sense OF those who ask
for it through its columns. 1t is not on.
ly much easier for the person interrogat.
ed to write one communication for the
Farmer than 10 answer score or more
Of private letters upon the same subject,
but it is better also for the inquirer, as a
public answer often call1 out ideas from
others which are great benefit to all
concerned.
COMPARATIVE MERITS OF THE PAIL AND
LARGE PAN SYSTEMS.
In reply to the inquiry concerning the
comparative merits of my pail system and
tho Jewett pans | will here say that that
is matter OF opinion, which all interest.
ed in must decide Tor themselves. 1t is
new question, and in the present absence
OF practical facts concerning it, we must
be guided by theory only in its solution.
1t express preference l can only give
the principles upon which l base that
preference. have had no practical ex.
rerienco with the Jewett pans, and Of
course have no practical facts to offer up.
on the subject Of comparative merit. The
Jewett pan, or any other patent pan with
which | am acquainted by which milk
can be conveniently tempered by the use
of water, is much better every way than
common pans. | should incur little risk
were | to guarantee that all who will EN-.
poy them will be well pleased with the
change. Many who have adopted them
are enthusiastic in their praise. As in
the history of the early introduction of
moving machines, there are those so san.
guine that they will take offense if one
insnuates that there can be anything bet.
ter than the kind which they have adopt
cd. But as with moving machines it
will require time to settle this question
to the satisfaction of the general public.
And doubtless as in that case, those who
are now most confident with regard to the
success of their patents will eventually
east them aside themselves.
TIE PAIL SYSTEM PREFERRED, AND WHY.
| prefer the pail to the pan system
and will very briefly give my reasons FOL
this preference. As your correspondent
inquiries especially about the Jewett pat
ent, l shall consider that only, in discus
sing the comparative merits Of the two
systems.
There is one very important principl,
involved in this question with which W.
ore oil familiar, but to which one who
has not tested the extent will surely fai
to give sufficient weight, That is tn,
fact Of the tendency of heat to rise, ant
the great difficulty of drawing it down
ward through fluids. We can cool fuic
much more readily by placing a small
piece of ice upon its surface than by plac
ing it upon ice, even though the bottom
of the vessel containing it be very per
feet conductor. There is a very simpl
illustration Of this principle with whicl
dealers in milk arc all fapiiitr If yol
place can Of warm mix upon larg
piece Of ice the top will sour, while tb
ice upon the nd and sides it will COO
quickly ord uniformly, and all remai
sweet ior long time. Place piece O
ice IN vat OF water in which pals @
milk are immersed, and the ice will mel
so much more rapidly at the surface G
the water that it will soon be divided il
to tw' parts, Place your thermomete
at the surface OF the wator aud note tn
temperature, then do the same 1t the Dol
tom, and you will at once understand tn
cause Of the phenomenon. l have thu
found variation of 23e in vat {
water % inches deep, balfa hour afte
the pals Of milk were co: into it, an
with ice footing on its surface. | fin
that II III very warm sultry weather l a
low the milk in my pals to extend tw
or three inches above the surface of IL
ice.water it will thickcn at the top viii
The bottom is apparently sweet
These illustrations | trust will sufii
to explain the principle to which | refel
to establish the fact that if we wou
cool fluid uniformly we must draw Il
heat from the sides or top and that
capnot be accomplished by applying j
or cold water to the bottom only
Now the object sought in raising crca
is the maintenance of right and M
form temperature. theoretically, III
can best be accomplished by placing i
upon the surface of our milk, but as Il
is not practicable, place it upon t
surface Of water, and immerse my mi
in that, and thus secure much better
suits than if apply it to the bottom c
ly, as in the Jewett pau.
But perhaps the reader will ask, Nv
not obviate this defect in that pate
by allowing the water to extend up t
sides Of the PAM" This would undoul
eddy remedy the evil if the pan was We
narrow. The influence of cold when ,
pied 10 the sides, even, Of a vesrel
warm milk, extends very slowly in he
zontal direction, aud you can only secl
the best results by placing your milk
vessels Of small diameter
THE PRACTICAL WORKING
of this principle, was very forcibly i'll
trated by an advocate OF the Jewett p
at the last meeting Of our Dairyme
Association, at St. Adams. When ash
why Mr.. Jewett did not allow the wa
to extend up the sides of his pan, inst'
of combining it to the bottom, he repl
that it caused the heat 10 be drice,
the cfnter Of the upper portion Of
milk, and resulted in its souriug at t
point quicker than at the sides and
tom.
| do not give this Illustration beca
OF the scientific correctness of the
PLANTATION. but because of its presentat
OF an obvious result. AS the pripci
which l have endeavored to explain
liked fact, law of tho Creator, and CT