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The Amateur Propagator . 
75 
to be fixed into the top of the under-case, so as to prevent the perforated 
zinc bending under the weight of the soil which will be placed on it. Some 
of the one by one-inch stuff must next be nailed to the sides of the lower case, 
three inches from the top, to form a rest for the iron tray, and the bottom 
boarded up, leaving an open space in the middle, about eight inches square, 
to admit the lamp chamber. The latter should be of the same material as 
the cases, and about ten inches high. It may be fixed into the case by 
nailing a piece of the one by one-inch wood across the top, back and front, 
and fixing these to the bottom of the case (see Fig. 9). When the lamp chamber 
is well and firmly fixed, the whole concern (Fig. 5) may be set upon its legs, 
which are made similar to Fig. 10, so as to hold the two cases firmly together. 
Screws must be used to fasten the legs on. So far, however, we must bear in mind 
that the lower case and the lamp chamber have each one side open, and these 
must now be put on by means of hinges. The sash-bar (Fig. 6) should be cut to 
the proper length and nailed across the top, as shown at A, Fig. 7. Some slides 
made of the one by one-inch stuff must be nailed along each side of the case 
for the glass to rest on. The aid of a plumber must be called in to fix the 
steam waste-pipes (Fig. 10), which are brought up through the perforated 
zinc (3, Fig. n), and taken through the side of the case just below the glass 
(5, Fig. 11), so that all superfluous steam is thrown off outside the propagator. 
Leaden gas-tubing does very well for this purpose, but it must not measure 
less than three-quarters of an inch externally. If this method of disposing of 
the moisture does not carry off enough, a good thick layer of hemp should be 
