Phosphoric acid 0.100 0.108
Sulphuric acid 0.025 0.117
Silica ---- 0.005
-------- ---------
14.397 17.249

_Soluble in Sulphuric Acid_.

Alumina 17.460 15.684
Magnesia 0.459 0.446
Lime 0.286 trace.
Potash 0.616 1.250
Soda 0.317 0.285
--------- ---------
19.138 17.665

_Residue_.

Silica, soluble 11.675 \
69.546
" insoluble 49.477 /
Alumina 3.062 4.178
Lime 0.700 0.134
Magnesia 0.212 trace.
Potash 0.276 1.180
Soda 0.503 1.048
-------- ---------
100.000 100.000

These are alluvial soils from the Delta of the Irrawaddy.