<div class="chaptext" id="l8"><SPAN name="less8"></SPAN>
<div class="lesson">LESSON VIII.</div>
<div class="chaphead">PICTURES AND PLANS.</div>
<p>You all know what a picture is. But do you know what a plan
is?</p>
<p>A little boy wanted to show his cousin, who lived some miles away;
the shape and size of his house, and how the rooms were arranged.
How could he do this?</p>
<p>On a large sheet of white paper, he placed lines of blocks in the
form of his house. Then, with a lead pencil, he drew a line on the
paper along the sides of the blocks. He next took up the blocks,
and there, on the paper, was a plan of his house.</p>
<table summary="illustration" class="centeredimage" width="100" cellpadding="5"
cellspacing="0" border="0">
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<td><SPAN href="images/013_l.gif" target="_blank" id="ill13"><ANTIMG src=
"images/013.jpg" border="0" alt="THE PICTURE SHOWS THE OBJECTS." /></SPAN></td>
</tr>
<tr>
<td>
<div class="caption">THE PICTURE SHOWS THE OBJECTS.</div>
</td>
</tr>
</table>
<p>Here is a picture of a schoolroom. We see desks, the teacher's
table, a chair, a clock, globe, and two maps, in the picture. The
picture shows these objects as they would appear if we stood at the
door behind the teacher's table and looked in.</p>
<p>This is a plan of the schoolroom, a picture of which is shown
above. You see, the plan and picture are quite different.</p>
<table summary="illustration" class="centeredimage" width="100" cellpadding="5"
cellspacing="0" border="0">
<tr>
<td><SPAN href="images/014_l.gif" target="_blank" id="ill14"><ANTIMG src=
"images/014.jpg" border="0" alt="THE PLAN SHOWS WHERE THE OBJECTS ARE." /></SPAN></td>
</tr>
<tr>
<td>
<div class="caption">THE PLAN SHOWS WHERE THE OBJECTS ARE.</div>
</td>
</tr>
</table>
<p>The picture shows the objects as we see them before us. The plan
shows where the objects are, and their direction from one
another.</p>
<p>Now let us see if we can make a plan of the same schoolroom on the
blackboard.</p>
<p>The first thing is to measure the sides of the room. We will
suppose the two long sides are each forty feet long, and the two
short sides each thirty feet long. Now we will draw four straight
lines on the board for the four sides. Of course, the lines must be
much shorter than the sides themselves, else our plan will be too
large.</p>
<p>Make one inch in the plan stand for one foot in the room. So the
lines for the long sides will each be forty inches long, and the
lines for the short sides thirty inches long.</p>
<p>The next thing is to make spaces in the sides for the door and the
windows, and oblongs for the desks. But we must remember that an
inch in our plan stands for a foot in the object itself, and
therefore we must allow as many inches for the width of doors and
windows, and for the length and width of the desks, as there are
feet in the objects themselves. Thus, if the door is three feet
wide, we must make it three inches wide in our plan.</p>
<p>And lastly, we will draw a circle for the globe, and an oblong and
square for the teacher's table and chair, that shall show just
where and just how long these objects are.</p>
<p>We have now a <i>plan</i> of the schoolroom. Let us put N. to show
the north side of the room, S. to show the south side, E. to show
the east side, and W. to show the west side. We can now tell the
direction of one thing from another in our plan.</p>
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