APPENDIX. 67 



The case itself should not be placed in too retired a 

 part of the room (except as regards that containing 

 Trichomanes brevisetum, or HymenopTiyllurn), as the 

 natural tendency of the plants to creep towards the 

 light would thereby be increased. 



ERRATA. 



Page 4, line 4, for "number" read "member." 

 18, ,, 28, for "long" read "short." 

 ,, 45, 14, add, except the first, where tufted. 



Fig. 31, for " Scolopendium " read "Scolopendrium." 



