OF SOME EPIPHYTIC FERNS. 181 
Analysis of humus mass. 
Percentage of ash of composition given, 7°23 2-76 
Obie Ba ee mee 10°53 
Chloride of potassium - 169 4-48 
Lime ... pie” coke es” 48°47 
Sie eS ae 8-92 
Alumina pe ose .-. traces traces 
Ferric oxide ... mi ~ =e 799 
Phosphoric oxide... ewe 1031 
Sulphuric oxide Bis ac eee 9°10 
Sand ... dvs sts CIS. + ea 
Analysis of wood and bark of tree on which A. nidus grew. 
Percentage of ash of composition given, 1-31. 
Potash ig eo wees ei 
bed awe 12 
Chloride of potassium —_.... oe i oe 
Chloride of sodium... we - ... traces 
Lime ... ie vies 38°07 
esia 3°93 
Ferric oxide 151 
Phosphoric oxide 9°57 
Sulphuric oxide 3°75 
Soluble silica 17°07 
99°95 
obtain it di e quantities in the others we 
37°31, P. alcicorne, 27-73 and 31°72, A. nidus, 
ey are all requiring considerable quantities 
| ly seen in the table at the end, where the principal inorganic 
iituents are calculated into parts in ten thousand of the dried 
