The only means which can be employed to increase 
the hardness of files, is by more ly i 
simple manner, No more is ener ats. grant rere 
FILICES, | 
Ors of the P yecr natural series of plants included with 
the Musci, Heépatice, Lichenes, Conferve, &c. in the 
Cryprocamia of Linneus, and AcoTyLepones of 
vo AM vite on these plants have ae 
widely in ir opinions as to the etymology 
word. flices, Aiea derives flix, the name used | 
by Pliny, from lum quasi filatem incise ; but Ains- 
worth was no naturalist: even the roots of these ‘plants 
have no more resemblance to jilum, “a thread,” than 
those of other plants. It seems far more probable that 
the latter name is derived ame ray Quddrwy (foliis) ; 
the leaves or fronds of the European ferns neve alone 
visible, as the stems and roots are either hid under 
ground, or decayed leaves, mosses, &c. 
I. On the Germination of the Seeds, and Physical 
Witeney of Pera date Visa tas 
* Transactions of the Linnean Society, vol. ii: 
