Figs. 1-6, 8. 
Tig. 
ile 
ds 
a 
. 
. EquisetuM LYELLI Mantell 
| ge Oy DM th LP 
EQUISETUM VIRGINICUM, sp. nov .-.----- PREECE HOS = BOOED RNHO EHO Bed boDRaSSHaSsS 
Much-branched form of average dimensions 
Magnified portion, to show normal form of teeth -...--. 
Magnified portion, to show a blunter form of teeth 
Probably E. LYELLI Mantell, partially decorticated -.. - 
. Is 1° still more magnified and more diverging at the summit than the normal form. 
. One of the smallest branches seen 
. Three branches, probably primary, with many secondary ones 
. Several large primary? branches 
. Primary? branch, with a branching secondary ? 
. Profusely branching secondary? branch...-.. Sposecqesce 
8. Form showing curious and copious branching 
