OF SOME EPIPHYTIC FERNS. 179 
Analysis of live fronds. 
Percentage of ash of the composition stated, 4°74. 
Potash re: Bre ao Fes .. 40°48 
Chloride of sodium... ae aie <<, Ae 
ei ser ous ner ge ae - 
agnesia ... Be ive sve Sie ee 
Alumina : ie ee 
F oxide 68 
Phosphoric oxide ‘ 4°75 
Sulphuric oxide... wis he ee ee 
le silica “as ee dee en 93 
99°71 
Analysis of withered fronds. 
Percentage of ash of composition given, 1°73—1-21. 
- Potash i be 2°95 
Chloride of potassium Oe 13°71 
Chloride of sodium ... . 33s 5°64 
Lime ... ee 17°01 23 
Magnesia 4°21 7°07 
Alumina , “ 12°95 4 i & 4 
erric oxide ... oe ee eae 4°74 
Oxide of copper ve pee ORT as 
Phosphoric oxide _.... jeter 5°38 
Sulphuric oxide ee ‘ 6°11 10°25 
Sand ... oe SETS es 
99°79 100-00 
In the second column both the sand and the oxide of copper 
have been removed as accidental ingredients, the analysis of the 
live fronds not showing a trace of the latter. The withered fronds 
were generally four or five plies thick, above or outside the humus 
and the sand and copper were doubtlessly lodged between these 
plies, which were not separated, and although the relative amount 
of copper is large, it will be noticed that from the small percentage 
of ash the actual amount is very small. 
Analysis of humus mass. 
Percentage of ash of composition stated, 2°64—1-91. 
P ws 5 
A er ree 5°28 751 
Chloride of sodium ... PE ana af i 8 9°64 
Lime ... oe aw ee OE 39°89 
Magnesia 5°82 
Alumina 9°42 13°41 
Ferrie oxid 325 
Oxide of copper ise 
Phosphoric oxide... 3°10 441 
Sulphuri a ae 
Sand te ee 
