128 
APPENDIX. 
than they generally do in their habitats, producing 
fine fructiferous fronds. 
Adiantum Camillas- Veneris, Linn., can only he 
seen to perfection in a cultivated state when 
grown in this manner, when it developes the 
fronds very large, and forms a beautiful object. 
When the weather is very hot in summer I 
sometimes give them a sprinkling of water with 
the syringe, taking care to close the glasses as 
quick as possible, which greatly refreshes them, 
especially when in frames; but during six or 
seven months of the year they never receive a 
drop of water artificially. 
The various foreign species of Lycopodia I have 
tried in this way luxuriate amazingly. The only 
British species I have endeavoured to cultivate 
was L. clavatum, Linn., which grew very well, 
and when hung up, its long, slender, pendulous 
branches had a very graceful appearance. 
I find many of the species of Hepaticce thrive 
well in closed cases, especially those of the Mar- 
chantice and the larger species of Jungermannia, 
some of which have been cultivated here during 
the last three years, in a common frame, made as 
air-tight as possible. 
The beautiful Hygropila irrigua, Taylor, grows 
well, and is now (1st February, 1842) in an inci- 
pient state of fructification. 
