The Manitowoc pilot. [volume] (Manitowoc, Wis.) 1859-1932, 1875-04-08
now sNoN IS MADE.
BY ADAM sTwrN.

\
/ Johnny spent the holidays in the coun-
try-the jolliest place in the world at
such a time, at least for a small city boy.
But it is not about sleighing or shedding,
evening frolics or anything of that sort
that L am to tell you now. This time
Johnny learned how to make a snow
storm; not a very big one, to be sure,
| still a snowstorm and that gave him a
pretty correct idea of the way big snow
storms are made out of doors. This is
how it happened:
You will remember that about Christ
mas time we had few mild days fol-
| lowed by bitter cold at New Years. 1t
| was one of the warm days, and Johnny
had ventured out to slide ON the hill
back of the barn. In a little while he
| came running in, putting with excite
ment, and shouting: The barns a-frel
| the barns a-frep
Where?' / asked, starting up.
son top / guess" Johnny replied. "I
didn't see the fire-only the smoke. Just
see how it rolls over the roof l''
"Are you sure that is smoker"
asked, when / caught sight of the white
wreaths curling over the ridge of the
barn. ..- Oh FssF- ...
"Of course" said Johnny; "what else
can it be? Hurry and call the men or
the horses will all be burned"
Don't be alarmed" l said; "the
horses are in no danger. Still we will go
and see."
Before could get my hat Johnny was
scampering toward the barn, which he
expected every moment to see burst out
in blaze. When got there he stood
little way from the barn door, afraid to
go nearer lest the flame should suddenly
overwhelm him. -...t .
"Do you see any fire?"
"No," replied johnny" but just see
how the smoke comes over the roof"
LET US look inside" / said, opening
the door.
Johnny came forward timidly, greatly
smoke, at least.
MAYBE the roofs afire on top" he
SAID.
"Let US take look at it from the
other side" l said, leading the way
through the barn.
Every thing was quiet in the sunny
barn-vard. The cows were calmly chew
ing their CudS, and the chickens, clus-
tered in a corner, chuckled little at
our approach, as much l as IS 70 + SAY say: " Come
Johnny took no notice of COWS or
hens, but hurried to the further side of
the yard to get good sight of the roof.
"Well," said, as he stopped short and
looked a little disappointed, do you see
any fire?"
"No-o-o,n he replied, doubtfully
Nor smoke either. It's a perfect
swindle! / was sure the roof was a.
fire." .=s
LET US be thankful it isn't! But
how came you to make the mistaken"
"Come and see," was his only reply.
stepped across the yard and saw
just what expected. There was more
water than fire. The warm sun had
heated the shingles, melting the snow
from off them; and as the moist air next
the roof mixed with the colder air above
or drifted into the chilly shade little
white curls of cloud were formed like
puffs of smoke.
"What makes the roof steam so?"
johnny asked.
roof and the roof warmed the air next
TO it; how warm air drinks up the moist
ure-much more than it can hold when
cooled; and that the clouds were formed
by the chilling of damp air which made
the vapor in the air visible. "See," |
said, "on this sunny side of the barn,
where the air is warm, you can't see your
breath; on the shady side it comes out
like cloud. That is because the cold
air chills the moisture in the breath and
makes it visible"
Here Johnny went on with his sliding
and returned to the house.
Some time after, perhaps the next day,
Johnny surprised me with tne question,
"How do you know that it is moisture
that makes the breath white in the
cold ?"
"Go breathe on the window" l said.
"What for?" asked Johnny.
You'll see when you Try it" was my
reply.
Johnny went to the window and
breathed against the glass.
"What do you see?" asked.
Nothing but blur; but it doesn't
stay long"
keep on breathing, and breathe
| faster" said !. -.....
Iheard no more from Johnny for two
or three minutes; then he said:
"It is moisturel See. it is in little
drops oil over the glass, and one big drop
has run down to the bottom"
"Did you ever see anything like that
before2" s ea a ~.
"Of course" said Johnny. "The
glass gets wet so every cold day. Does
| it all come from our breaths?"
s"Oh, no! The most of it comes from
| the water on the stove. See," / con-
| tInued, holding a small hand-glass over
| the urn, "there is no steam that you can
see coming from the water, yet moisture
gathers rapidly on the glass. The cold
glass chills the air next it, making it un-
able to hold so much vapor, SO the moist
ure lodges on the glass just as it does on
| the window -ss5 aEe ea .-fs=ir
us that the way the frost forms on the
| windows when it is very cold?"
Exactly, only in that case the moist
ure freezes as ID FORMS If you will step
into the store-roOm, where there is no
| fire, and breathe slowly against the win
dow, perhaps you will be able to see
how the frost appears"
| Johnny ran to do as ! had told him,
and went out to the woodshed for big
broad-ax that was there.
When came back he had long story
to tell about the beautiful forest pict-
ures that grew up under his breath, but
! had no time TO listen to it then.
brought the ak quickly to the stove and
| Eelu II nIgn over tNt
Johnny to tell me what happened.
cit smokes" he said.
'stJust as the barn roof smoked" !" said
/. "The cold iron chills the vapor in
the air and makes cloud of it. If the
iron does not get warm too soon you
viii see something stranger than cloud. >
II can now," cried Johnny. lts
frost"
$50 it is,r said l. "The iron is colo
enough to freeze the vapor as it turns tt
water / think something of this soT
is going on up in the sky just now"
Do your" cried Johnny, eagerly, run
ming TO the window "Where?"
"A1l over" I said. 1.-The sky wa
clear but little while ago; now see how
hazy it is The wind that comes uI
from the sea is warm and moist, anc
where it strikes the cold air over ths
land it turns TO cloud. / shouldn't bt
surprised if We had snow before morn
ing"
Il hope so," said Johnny; and hi