BRITISH FERNS. 
35 
Hart’s Tongue—Free soil, shade, and moisture. 
Tunbridge Film Fern—This fern can only be well grown 
under glass. Fill an ordinary flower-pot with wet bog- 
moss ( Sphagnum ) and invert it, then mix fine sand, loam, 
and peat-earth, saturate with water, and mix to a kind 
of mortar ; plaster this all over the inverted pot, arrange 
the roots of the Film Ferns over the surface of the mor¬ 
tar, then fill a saucer with wet bog-moss and cover its 
surface with fine sand. On this place the inverted flower¬ 
pot and cover with a bell-glass, the ring of which will 
sink into the Sphagnum contained in the saucer. 
The Royal Flowering Fern (Osiminda regalis ), fig. 3, 
though really a bog fern, will live in the ordinary soil of 
any garden, but to make it thrive care must be taken to 
supply peat or bog earth, and it can scarcely have too 
much water. 
Surrounding most of these species of fern, club and 
other mosses may be cultivated. Many of the common 
species, such as the Tortulas, Bryums, Hypnums, etc., 
may with care be brought to luxuriant growth, other 
species will be found more difficult. Here and there 
grass-seed may also be thrown. The object of growing 
