THE WARDIAN CASE. 237 



An ingenious mind will suggest numerous designs for 

 the purpose, and of these, built structures are always 

 preferable to the mere glass dome or bell, as they can be 

 ventilated and arranged with greater ease. 



In England, Wardian cases are often built in windows, 

 by removing a portion of the lower sash, and building 

 into the room of the required size, with the top flat, 

 sloping, or domed, as fancy may suggest. In our climate 

 this would seldom be practicable, for our winters would 

 chill the plants ; it might do, however, for eight months 

 in the year. 



The simple fern glass makes a cheap Wardian case ; it 

 is merely a common glass dish, with a rim, into which 

 is fitted a glass dome or bell. It answers well for 



