14 
WIND W GA R DENTIN U 
or bricks about tbe size of walnuts, then a sprinkling of sand and other pieces of 
brick bioken still smaller to about the size of a pea sliould be mixed with peat, 
and with this compost the box may be filled up. Cases of this kind are usually 
found in London, already prepared with plants, only needing the proper dimen- 
sions to be soon fitted to any window. 
The best plants for these cases are ferns, which require but ordinary attention. 
and tlie cultivator will also observe not to phi.ce them in a southern window ; a 
Fig. 5, 
northern or western one will be much better for they need little or no heat. As 
these cases cannot be heated, so no plants should be placed in there which require 
artificial warmth. 
A very pretty design has been originated by a German gardener of a combined 
window case aquarium and fernery. (Fig. 5.) This occupies the window from tne 
sill to top of the upper sash The tank within contains slate slabs of consider- 
able height, say one-third of the whole window on the outside of the case, the 
inner side nearest the room benig of glass to afford a view of the interior. This 
slab is necessary to avoid the effect of the sun's rays which, when passing through 
