Randolph County journal. [volume] (Winchester, Randolph County, Ind.) 1855-1862, 1858-09-23

drops stand on IL, Oh course.
Emma. That can not be, for
poured the water in myself when
arranged the flowers, and it was
perfectly dry then. But how curious
it is.--the little drops are just like
perspiration. This is what old Mrs.
Hall means by saying the tumblcr
sweats. and she says it is sign Of
rain.
Mary. / remember hearing he,
say so, and when Julia asked her the
reason of it, she said it was the
weather Mr. Hall said the air press
ing on the water causes it to come
through the pores Of the glass.
Emma. / do not think that is the
reason; for last Monday. when the
wind blew so hard, and the rain beat
against the windows. you know father
was afraid they would be broken in,
and he said he did not think glass
would stand such pressure, and yet
the water did not come through
Charles. Let us go and ask mother
the reason. She always tells us every
thing we ask her.
Mary. No, not always; for yester-
day. YOU know, we asked her to find
the Dead Sea Cor us, and she told
us we must find il. then we should
remember where it is,
Charles. Yes; and she said we
must learn to examine for ourselves,
and not depend too much on others
1t is pleasant, to be sure. to find out
things ourselves; but then it is so
much trouble.
Emma. Trouble, brother Charles,
trouble! hope you do not call that
a trouble. Come, let us try some
experiments. Here are some tumblers
now, we will fill one with water, and
while we wait for the little drops on
the outside, we will look at our
drawings.
Charles. There, it has been ten
minutes, and there is no water on the
tumbler. Where did you get this
water, Emma?
Emma. From the pail by the door,
but let us get som fresh from the pump.
and try it again. Never give up. as
mother says.
Mary. Five mnutcsl Look. there
is the water on the outside of the one
filled last, but there is none on the
first tumblcr. Now, what is the
reason Of this?
Emma. O! | have observed fact,
as our teacher would say. When we
put very cold water into the tumbler,
we see the moisture, but when the
water is warm, like that from the pail
which stood in the sun. tho drops do
not appear on the tumblcr.
Mary. You are an observing little
", Emma, and now can you tell
why it is SO?
Emma. No, sister, can not.
But here comes mother; she will tell
us. / am sure
Mother. Ny children, have over
heard Your conversation, and am much
pleased to hear You inquire into the
reasons of things in this way. And
now. as my little Emma has used her
observing powers to such good advan.
tagc. let her employ her rejecting
faculties. and think what becomes OF
all the water which falls in rain.
Charles. 1t dries up. mother, does
it not?
Emma 1t cvaporates, and forms
clouds again, mother?
Mary. Yes; and the clouds fall
again in rain. and it evaporates oil
turns to vapor again; and SO on al tho
time.
Mother. You have answered very
well; but Charles will please remember
lit dries up" is not very expressive
phrase. This vapor is constantly
rising in particles so minute that we
can not perceive them. and it is this
which settles on the tumbler when
You pour cold water into it. The heat
or temperature of the water being less
than that Of the air, the vapor is
cooled, and made to assume the form
of water. Similar to this is steam
which is condensed by coming il
contact with cold vessel. | think
You understand me; and now for thu
warm water in the tumbler. Ths
temperature of this was nearly tn,
same as that of the air; so the vapo,
was not condensed, of course
Emma. / understand you: mother
for steam would always be steam if !
was kept heated. but when the heat il
taken away it becomes water.
Mother. So the warm water. keep
ms the vapor warm, prevents it from
being condensed: while the cold water