52 
Choice Ferns for Amateurs. 
cool Fernery (devoted, say, to Japanese, New 
Zealand, Australian, and evergreen British kinds) 
in which the temperature during winter is only kept 
a little above freezing-point, ventilation from the 
roof is quite sufficient. Where, however. South 
American and East and West Indian species are 
Fig. 33. A Northern Indian variety— Aspidium triangulum 
ilicifolium— in which the leaflets have pointed extremities, 
giving them the appearance of Holly=foliage, hence the 
specific name. A capital pot Fern. 
grown, ventilators along the sides of the house should 
also be provided. These should be disposed a little 
below the level of the hot-water pipes, so that the 
air which, before escaping through the top venti- 
lators, passes over and amongst the plants, should 
only do so after having been slightly warmed by its 
temporary contact with the hot-water pipes. 
