LIGHT AND AIR. 19 
succeed best in low and very closely constructed or ‘ tight” 
structures of comparatively small cubic contents, fitted with 
plenty of piping, so that a high temperature may be easily 
maintained. A similar class of house would be suitable for 
the culture of exotic ferns, small palms, and stove plants 
generally, but for larger palms, bananas, and other tropical 
subjects of considerable growth, height must be afforded 
as well as a brisk temperature. Vines should, of course, 
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Fig 7. 
be allowed fairly lofty or roomy structures, and for peaches, 
etc., abundance of both light and air, with a fair allowance 
of space are necessary. Lastly, ordinary ‘‘ geraniums,” 
(pelargoniums) as well as the majority of the usual ‘‘ cool” 
greenhouse and bedding plants, ete., require plenty of air 
and light, and to be kept near the glass, so as to ensure a 
dwarf and bushy habit of growth, so that for all such low, 
yet light and well-ventilated, houses are desirable, and what 
c 2 
