OF SOME EPIPHYTIC FERNS. li7 
burning, the humus emitted the characteristic odour of 
peat smoke. The second column gives the composition of the ash 
: “fe ike 
very fine white sand, which shows that some dust reaches even 
still of the scrubs. 
Wood and bark of the tree to which P. grande was attached. 
Percentage of ash of the composition given, 1-27. 
Analysis of ash. 
Potash 14°93 
Chloride of potassium 8°09 
Chloride of — 
Lime ee pss 39°91 
Magnesia wee bag es w+ 23°84 
Ferric oxide .. ste oe see w= =—:146 
Man anganese oxi S3 ie sk ... traces 
ne si oxide ... oe “Ks dics a ee 
Sulphuric oxide... set wi ... traces 
Solu ‘ble sities = ive ots «i, eee 
100-06 
— 
much larger. They grow either on projecting rocks or attached 
—— stems of Casuarinas or other trees which do not shed their 
oe 
Aderholdt. Ann. d. Chem. u. Pharm., Ixxxii, 111 (1852). 
Church, Chem. N, J. Pr. Chem. xl, 302, 
Sol teat ag sony a ese gn eee xl, 
