ards and "sheathing." For the gable ends, a board and sheathing wall
to the same height, and for the balance, sash-bars and glass. The
required openings will be a door or doors, and three ventilators, to
give a sufficient supply of fresh air.

[Illustration: Fig. 3--A sectional view of a two-bench, 10 X 20 ft.
house built against the dwelling wall. If possible it would be well to
gain a steeper slope for the glass and better headroom. The detail in
the upper right hand corner shows, at larger scale, the plate and front
lights, indicated just below in the main section.]

For these the material required will be:

10 ft. of 2-in. x 4-in. ridge $ 0.80
13 10-ft. drip bars 3.25
2 10-ft. end bars 1.00
5 6-ft. x 1-1/4-in. second-hand pipe posts .50
20 ft. 1-in, second-hand iron pipe 1.00
4 1-1/4-in. x 1-in. clamps .50
20 ft. 2-in. x 4-in. eaves plate 1.60
20 ft. 2-in. x 6-in. sill 2.20
15 1-in. pipe straps .50
18 ft. 2-in. x 4-in. sill, for gables 1.50
40 ft. side bars, random lengths, for gables 1.00
3 ventilating sash for 3 24-in. x 16-in. lights 3.00
9 16-in. headers for ventilators .40
6 hinges with screws for ventilators .75
1 roll tar paper, single-ply 2.00
6 boxes 24-in. x 16-in. glass, B double thick 24.00
75 lbs. good greenhouse putty 2.50
------
Total of items listed above $46.50

All of the above will have to come from a greenhouse material supply
company, and prices given do not include freight charges. The following
items may probably be bought more economically in your immediate
vicinity, and the prices will vary in different sections of the
country:--

Total of items listed above $46.50
240 ft. rough 1-in. boards 7.50
6 posts, 4 in. thick, 6 ft. long, planed on one side} 3.00
2 posts. 4 in. thick, 8 ft. long, planed on one side}
1000 shingles 4.00
------
Total cost of materials $61.00
Estimate of labor 20.00