The Conservatory . 
135 
Therefore, heavy pillars and cumbrous roofs are objectionable; given strength 
enough, and for the rest the plants should be exposed to the fullest possible 
intensity of daylight, or there can be no satisfactory results. The dimensions 
and the design must be, to some extent, determined by the owner, but the 
requirements of the case demand that the roof of every kind of plant-house 
should be no higher than needful for the plants it shelters and the comfort 
of its occasional human inmates. Regard it as a golden rule to make the 
roof as low as you dare, for lofty roofs have killed quite as many plants as 
any other particular folly in conservatory construction. Lastly, a good system 
