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Bond, A. Russell

"The Scientific American Boy The Camp at Willow Clump Island"

The window sash consisted of a frame 13-1/2 inches
square, made of 3/4-inch square strips over which canvas was tightly
stretched and tacked. A spool was nailed on at one side for a handle.
These windows were closed only in rainy weather, to keep the water out.

Sliding Doors.
[Illustration: Fig. 144. Section of the Door and Frame.]
[Illustration: A Filipino Bamboo Tree House.]
We had two doors; one at the back of the house, from which a ladder
extended down to the ground, and another opening out onto the veranda,
from which we dropped a ladder down to the Goblins' Dancing Platform. In
order to save space we used sliding instead of swinging doors. The back
door frame was 5-1/2 feet high and the front door frame 6 feet high. The
doors were mounted on the outside of the building. The side posts of each
frame were 2-1/2 feet apart, and the lintel and sill extended 3 feet
beyond the side post at one side. The upper face of the lintel was planed
down perfectly smooth, and its edges were tapered off to make a track for
the rollers on the door. The rollers consisted of two spools, which turned
on tenpenny nails driven into the top of the door. At the lower end two
more spools were mounted, turning on nails driven in the bottom edge of
the door.


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