1644 GARDENING INDOORS AND UNDER GLASS 
of illustration. It may be either too large or too 
small for the purposes of some of the readers of this 
book, and I shall therefore give very briefly de- 
scriptions of several other types of small houses, 
some of which may be put up even more cheaply 
than the above. The plainest is the sash lean-to 
somewhat like Fig. 3, which is made by simply 
securing to a suitable wall a ridge-piece to hold one 
end of the sashes for the roof, and erecting a wall, 
similar to the one described above, but without 
glass, and with a plain, 2 x 4 in. piece for a sill, to 
support the other ends. Either a single or double 
row of sashes may be used, of the ordinary 3 x 6 foot 
size. In the latter case, of course, a purlin and sup- 
porting posts, as shown in diagram, must be sup- 
plied. Every second or third top sash should be 
hinged, to open for ventilation, and by tacking strips 
over the edges of the sash where they come to- 
gether, a very tight and roomy little house can be 
put up quickly, easily and very cheaply. New 
sash, glazed and painted one coat, can be bought 
for $3 to $3.50 each. Ten of these would make a 
very practical little house, fifteen feet long, and 
over ten feet wide. 
Another form of lean-to where there are win- 
dows is shown in another diagram. The even- 
span house, of which type there are more erected 
than of any other, is also shown. The cost of such 
a house, say 21 feet wide, can be easily computed 
